| Patents for E04F 17 - Vertical ducts; Channels, e.g. for drainage (3,992) |
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| 03/16/1999 | US5881503 Decorative window well |
| 03/03/1999 | CN2309388Y Channel pipe element for locating indoor partition and pipeline |
| 02/25/1999 | DE19731592A1 Supply pipe blocks |
| 02/11/1999 | WO1999006663A1 Modular door frame system |
| 02/11/1999 | WO1999006662A1 Door or window frame comprising a wall-mounted section |
| 02/11/1999 | DE19731589A1 Prefabricated building-storey sections installation system |
| 02/10/1999 | EP0896112A1 Chimney pipe element in particular to be installed at the level of a roof lead-through |
| 02/10/1999 | CN2307068Y Heat insulating noiselss air duct |
| 01/20/1999 | CN2304709Y Externally repaired structure of indoor pipes out of floor |
| 01/07/1999 | DE19727318A1 Device for avoiding condensation and steaming up of windows of habitable buildings |
| 12/24/1998 | DE19721118A1 Residential house of reproducible raw materials |
| 12/23/1998 | CN2301493Y Enclosed underground dustbin |
| 12/10/1998 | CA2236904A1 Roof jack for furnace |
| 12/09/1998 | EP0882928A2 Chimney flue pipe made of sleeve pipe section and sealing means for such a joint |
| 12/09/1998 | EP0882851A2 Supply unit for sickrooms |
| 11/18/1998 | EP0877843A1 Interior lining for the restoration of rooms, in particular bathrooms, as well as a method for restoring such rooms |
| 11/12/1998 | DE19719496A1 Modular system housing on storey floor basis |
| 11/12/1998 | DE19719367A1 Ventilation arrangement for building |
| 11/11/1998 | EP0877209A2 Ventilation device for a building |
| 11/11/1998 | CN2296907Y Composite air duct |
| 11/11/1998 | CN2296906Y Air-duct jointing device |
| 11/10/1998 | US5832682 Chimney moisture seal |
| 10/29/1998 | WO1998047788A1 Method and arrangement for controlled refuse discharge |
| 10/29/1998 | DE19717197A1 Method of producing hollow profiled preforms for passages in building walls |
| 10/28/1998 | EP0874107A1 Earthenware pipe element for the manufacture of flue gas exhaust conduits |
| 10/28/1998 | CN2295812Y Y-shape pipe for garbage channel of building |
| 10/07/1998 | CN2293611Y Closed garbage bucket of glass fibre reinforced plastic garbage tunnel |
| 10/01/1998 | DE19710789A1 Building roof |
| 09/23/1998 | EP0698308B1 Lower part for an installation duct |
| 09/16/1998 | CN2291461Y Multi-floor movable door screw spout |
| 09/10/1998 | DE19709328A1 Air vent through wall |
| 09/10/1998 | DE19708337A1 Building block with flue |
| 09/01/1998 | US5800260 Air supplying device for building |
| 08/20/1998 | DE19705542A1 Building ventilation channel |
| 08/19/1998 | CN2288232Y Refuse pipe guide |
| 08/18/1998 | US5794392 Utility distribution system for open office plans and the like |
| 08/05/1998 | CN1189567A Active expansion bolt single-tube support |
| 07/30/1998 | DE19702795A1 Mounting structure for ventilation ducts on e.g. walls and ceilings |
| 07/29/1998 | CN2286780Y Decorative plate piece for indoor pipeline |
| 07/23/1998 | DE19701275A1 Fire prevention valve |
| 07/23/1998 | DE19700767A1 Sound damping cushion |
| 07/23/1998 | DE19700411A1 Refractory material panel for construction of heated structures |
| 06/30/1998 | US5772112 Recycling device |
| 06/24/1998 | CN1038865C Air discharging structure for high buildings |
| 06/23/1998 | US5768840 Integrated utility distribution and panel system |
| 06/09/1998 | US5762083 Support for garbage chute cleaning apparatus |
| 06/04/1998 | DE19648259A1 Device for connecting air shaft to building wall |
| 05/26/1998 | US5756933 Wall mountable universal bracket for use with a raceway system |
| 05/20/1998 | DE19734346A1 Watertight flashing for sealing aperture in roof of building |
| 05/19/1998 | US5752348 Window well cover |
| 05/14/1998 | WO1998019580A1 Head wall for a hospital room |
| 05/14/1998 | DE19646688A1 Method for forming seams of inner tube components for exhaust gas installation |
| 05/14/1998 | DE19646259A1 Drainage pipe wall slot cover |
| 05/12/1998 | US5749192 Corner clips for horizonal framing |
| 04/28/1998 | CA2069559C Shaft wall and horizontal metal stud therefor |
| 04/21/1998 | US5740644 Wall with horizontal metal stud and reinforcement channel therefor |
| 04/08/1998 | CN2278029Y Improved central exhausting duct for residence in building |
| 04/02/1998 | DE19638541A1 Template used in building construction for displacing chimney mantle block |
| 04/01/1998 | EP0832406A1 Brick for heat exchangers |
| 03/26/1998 | DE19741901A1 Chimney flue of stacked lightweight components |
| 03/18/1998 | EP0828906A1 Plastic light well with cover |
| 03/17/1998 | US5728980 Duct silencer |
| 03/10/1998 | US5724784 Shaft wall and horizontal metal stud therefor |
| 03/06/1998 | CA2184846A1 Plumbing vent |
| 02/26/1998 | DE19633636A1 Lift shaft cabin and connection walkways for existing buildings |
| 02/25/1998 | CN2275135Y Multifunctional indoor rubbish transport device |
| 01/27/1998 | CA2142190C Waste air exfiltration duct |
| 01/22/1998 | DE19629111A1 Chimney cladding for chimney |
| 01/22/1998 | DE19629108A1 Chimney cladding for chimney |
| 01/15/1998 | DE19628013A1 Sheet metal cladding for chimney protruding above roof top |
| 01/14/1998 | CN1170123A Aeration structure in buildings |
| 01/07/1998 | EP0817163A2 Variable volume resonating element |
| 12/30/1997 | US5703720 Light collection and distribution apparatus |
| 12/16/1997 | US5697193 Utility distribution system for open office plans and the like |
| 12/11/1997 | DE19618724A1 Laboratory media supply system e.g. for water, gas and electricity |
| 12/09/1997 | US5696361 Multi-ducts sound eliminator for air pipe |
| 12/04/1997 | DE19722620A1 Ducting e.g. for pipes or cables, in concrete or wells |
| 12/04/1997 | DE19621888A1 Wall fixture installation element for rooms |
| 11/27/1997 | DE19715618A1 Living quarters with at least one apartment on at least one storey |
| 11/19/1997 | CN2268076Y Bucket-connected refuse conveying pipe |
| 11/12/1997 | EP0806615A2 Aeration structure in buildings |
| 11/10/1997 | CA2204690A1 Aeration structure in buildings |
| 11/06/1997 | DE19616669A1 Ceramic pipe for firing plant chimney |
| 11/06/1997 | DE19616268A1 Square-section chimney for building |
| 10/30/1997 | DE19616132A1 Method for retro-fitting of plumbing services in multi-storey premises |
| 10/29/1997 | CN2266010Y Drawer type refuse inlet device |
| 10/21/1997 | US5679931 For noise bearing fluid streams |
| 10/16/1997 | WO1997020173A3 Sealing device |
| 10/16/1997 | DE19614792A1 Modular construction of tall chimney |
| 10/14/1997 | US5675949 Utility distribution system for open office plans and the like |
| 10/08/1997 | EP0800250A2 Corner channel |
| 10/01/1997 | EP0798513A2 Double walled pipe element for building chimneys |
| 09/29/1997 | CA2172896A1 Air distribution line |
| 09/25/1997 | DE19611040A1 Moulding, especially shaped brick for fume extractor in tile firing kiln |
| 09/24/1997 | CN2263160Y Shopping passageway for high building |
| 09/24/1997 | CN2263151Y Combined brick for flush mounted switch |
| 09/18/1997 | DE19608786A1 Building opening forming-core production method |
| 09/04/1997 | DE19626167C1 Volume-alternating resonator component |
| 09/03/1997 | CN2261468Y Blocks for constructing and repairing for building |
| 08/19/1997 | US5657587 Floating accessible areaway system |