| Patents for E04F 17 - Vertical ducts; Channels, e.g. for drainage (3,992) |
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| 08/08/1992 | CA2056617A1 Trash collection and storage system |
| 08/06/1992 | DE4201648A1 Collapsible support system for circled metal covering - photographic support frame |
| 07/28/1992 | US5133580 Butt connection between two air duct sections made sheet of metal |
| 07/16/1992 | DE4200265A1 Pipe clip for centring and fixing two pipe sections - has flanged ends and slide member held by tension screw |
| 07/07/1992 | US5127507 Offset assembly for a gravity conveyor chute |
| 07/02/1992 | DE4040495A1 One-piece, hollow adaptor for connecting rigid pipes to flexible tubes - has threaded end connecting with pipe and sleeve-end connecting with tube using pipe clip, esp. for air conditioning systems |
| 06/30/1992 | US5125198 Dual fitting chimney cap |
| 06/30/1992 | CA1304212C Electrical raceway floor track |
| 06/17/1992 | EP0302113B1 Method and apparatus for collecting waste material |
| 06/16/1992 | CA1303321C Readjustable floor system |
| 06/03/1992 | CN1016879B Carbage conveyer without power used for high buildings |
| 05/26/1992 | CA1301525C Thermally insulated window with ventilation ducts |
| 05/19/1992 | US5114189 Suction box |
| 05/06/1992 | EP0483289A1 Pipe duct structure. |
| 04/28/1992 | US5107640 Modular accessible areaway system |
| 04/28/1992 | US5107636 Medical equipment support column |
| 04/22/1992 | CN2102327U Anti-fire device of flue |
| 03/11/1992 | EP0474336A1 Cable duct fitting with removable cover |
| 03/11/1992 | EP0473982A2 Mantle block for multiple-casing house-chimneys |
| 03/05/1992 | DE4027954A1 Method of setting connections for wall radiator in central heating - involves fixing protective pipes into chases cut in wall before plastering and later inserting permanent pipe work into them |
| 03/04/1992 | CN2097867U Frame type investment bin rubbish bucket door |
| 03/04/1992 | CN2097866U Adjustable fixed combined pipe seizing frame |
| 03/04/1992 | CN2097865U Exhaust valve control device |
| 02/25/1992 | US5090546 Door/ledge assembly for gravity chute |
| 02/20/1992 | WO1992002699A1 Universal waste disposal apparatus |
| 02/13/1992 | DE4015652A1 Burglar-proofing of cellar windows - involves mounting of rolling tubes to prevent them being sawn through |
| 02/12/1992 | EP0470945A1 Chimney element, system of multiple chimneys, and method of manufacture of a chimney element |
| 02/05/1992 | EP0469353A1 External covering for reinforced concrete surfaces |
| 01/29/1992 | EP0468563A1 Method of installing a grommet in a wall of composite material |
| 01/28/1992 | US5083730 Traverse for support structures in industrial use |
| 01/28/1992 | US5083363 Method of installing a grommet in a wall of composite material |
| 01/24/1992 | WO1992001615A1 Separated waste collection system for multi-story building |
| 01/23/1992 | WO1992001130A1 Tile-shaped building element and building having floors formed with said tile-shaped element |
| 01/22/1992 | EP0467876A2 High-rise building |
| 01/15/1992 | CA2046935A1 High-rise building |
| 01/14/1992 | US5079883 Box intended for passing pressurized fluids through masonry work |
| 01/01/1992 | CN2091912U Clamping pieces for pipeline installation |
| 01/01/1992 | CN2091911U Protective sleeve for pipe orifice |
| 12/27/1991 | EP0462346A1 Machine for coninuous disinfection and deodorization of waste chutes |
| 12/18/1991 | CN2090844U Sealed refuse skip |
| 12/12/1991 | DE4108110A1 Retaining heat in buildings - involves sheep wool which is capable of breathing enclosed in retention zone |
| 11/27/1991 | EP0457967A1 Concrete element with U or rectangular crosssection, for making utility culverts |
| 11/12/1991 | US5063962 Apparatus for the controlled ventilation of rooms |
| 11/06/1991 | CN2088136U Pipeline bundle for house equipment |
| 10/23/1991 | EP0344151B1 Means for repairing pipes by remote-controlled insertion of a lining |
| 10/10/1991 | DE4011000A1 Prefabricated chimney for simple, rapid on-site assembly - has inner metal tubes butted at ends with elastic phenol] resin cover clamped round butt joints |
| 10/08/1991 | US5054187 Method and means for remote-controlled sheathing installation when renovating pipelines |
| 10/05/1991 | CA2013984A1 Waste disposal chute |
| 09/26/1991 | DE4021016A1 Conduit structure for air conditioning plant - has successive sections providing hydraulic and electrical fixings |
| 09/25/1991 | CN2085393U Collecting exhausting pipe for residential building |
| 09/25/1991 | CN2085392U Check valve for flue gas collecting and carrying away system of residential building |
| 09/05/1991 | DE4006321A1 Safety device for cellar gratings - fits over shaft wall fixture fillet with two fixing components |
| 08/28/1991 | EP0443222A1 Double-walled pipe element for conducts esp. for flues. |
| 08/28/1991 | EP0443193A2 Butt connection between two duct sections of sheet metal |
| 08/20/1991 | US5040351 Coupling for concrete wall or floor mounting |
| 08/14/1991 | EP0357737B1 Improvements in or relating to lift shafts |
| 08/13/1991 | US5038810 Boom operated chute cleaning device |
| 08/07/1991 | EP0439720A2 Weather-protection grille for a chimney |
| 07/30/1991 | US5035097 Coupling for concrete wall or floor mounting |
| 07/16/1991 | US5031829 Separated waste collection system for multi-story building |
| 07/03/1991 | EP0435067A2 Wall feed-through for pipes, cables or conduits |
| 06/26/1991 | EP0434167A1 Device for accommodating lines |
| 06/18/1991 | CA2008110C Chimney covering |
| 06/04/1991 | US5020651 Laundry chute |
| 05/29/1991 | CN2077888U Compound material chimney |
| 05/22/1991 | EP0428065A2 Method for producing raceways particularly in floors |
| 05/16/1991 | DE4032726A1 Lift shaft for passenger lift - has glass panes supported in steel frame |
| 05/16/1991 | CA2030010A1 Method for producing raceways particularly in floors |
| 05/08/1991 | EP0426539A1 Production process of a smoke pipe and smoke pipe produced in this way |
| 05/08/1991 | DE3936915A1 Cement for joining chamotte brick and ceramic material - contains ingredients which ensure stable properties at specific temp. with air-tight surfaces |
| 05/07/1991 | US5012621 Lift shaft apparatus |
| 05/02/1991 | EP0424617A2 Smoke tube for a chimney made of several sections |
| 04/18/1991 | DE3933777A1 Automatic closure for refuse chute |
| 04/16/1991 | US5007547 Multi-port container |
| 04/03/1991 | EP0420308A1 Continuous enclosure |
| 04/02/1991 | US5004377 Isolated insertion chute for suction-operated garbage disposal systems |
| 04/02/1991 | US5003739 Chimney facade system |
| 03/20/1991 | CN1050071A Buffering pipe component for reserving stool box |
| 03/19/1991 | US5000641 Refuse conveyor system |
| 03/19/1991 | CA1281668C Laundry chute |
| 03/13/1991 | EP0415910A1 Method for arranging lines in a floor level to be divided up into smaller rooms and elements suitable for this method. |
| 03/13/1991 | CN2073004U Dustbin for building |
| 03/07/1991 | DE3928837A1 Air conditioning or ventilation duct - has thermal insulation secured by plastics flange which clips over metal flange |
| 03/01/1991 | CA2024391A1 Suction box |
| 02/26/1991 | US4995765 Method of collecting wastes and system therefor |
| 02/19/1991 | US4993882 Waste collection method |
| 02/14/1991 | DE3925781A1 Air-conditioning and ventilation duct - is constructed from elements with thermally and acoustically insulated walls |
| 02/13/1991 | CN2071226U Magnesite concrete ventilation chimney |
| 02/07/1991 | WO1991001421A1 Pipe duct structure |
| 01/31/1991 | DE3925010A1 Cable channel of variable interior form - is of plastics material with interior construction of standardised components styled for clip=on assembly |
| 01/31/1991 | DE3922853A1 Insulated chimney stack head - has expansion joint sliding in widened upper end of inner casing |
| 01/29/1991 | US4987988 Refuse recycler |
| 01/29/1991 | CA1279466C Method for installing elevator doors |
| 01/23/1991 | EP0409779A2 Device for controlled ventilation of rooms |
| 01/22/1991 | US4986045 Cellular raceway |
| 01/22/1991 | US4986041 Prefabricated elevator shaft modules |
| 01/22/1991 | US4986040 Modular elevator shaft |
| 01/16/1991 | EP0407652A2 Mounting wall with bleeding devices for intensive medical care |
| 01/15/1991 | US4984408 Method for arranging lines in a floor level to be divided up into smaller rooms and elements suitable for this method |
| 01/09/1991 | CN1048425A Carbage conveyer without power used for high buildings |