| Patents for E04F 17 - Vertical ducts; Channels, e.g. for drainage (3,992) |
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| 01/04/1989 | EP0297145A1 Method of collecting waste material and system therefor |
| 12/28/1988 | EP0185744B1 A method and a tool for increasing the width in the clear of a chimney |
| 12/22/1988 | DE3817341A1 Multi-shelled prefabricated chimney |
| 12/13/1988 | CA1246701A1 Composite raceway having a body of synthetic material and metal cladding elements |
| 11/24/1988 | DE3813855A1 Apparatus for the extraction of gas from graves |
| 11/22/1988 | CA1245093A1 Vent cover |
| 11/10/1988 | DE3714681A1 Sealing arrangement on a chimney head |
| 09/21/1988 | CN87210675U Pressure-varying exhaust passage structure |
| 09/01/1988 | DE3705725A1 Multi-shelled insulating shaft |
| 08/31/1988 | CN87210687U Apparatus for carrying away flue gas |
| 08/25/1988 | WO1988006137A1 Elevator escape structure |
| 08/11/1988 | DE3702886A1 System for heating a building |
| 08/10/1988 | EP0277898A1 Casing for the passage of pressurized fluids through masonry |
| 08/10/1988 | EP0277344A2 Additional channels for conduits |
| 08/10/1988 | CN88100602A Microsound exhaust method of diesel (gasoline) generator units |
| 07/27/1988 | EP0276191A1 Passage of pressurized fluids through masonry |
| 07/21/1988 | DE3700309A1 Plumbing-wall element |
| 07/19/1988 | US4757651 Wall system |
| 07/14/1988 | DE3644339A1 Structural element |
| 06/30/1988 | WO1988004713A1 Method for arranging lines in a floor level to be divided up into smaller rooms and elements suitable for this method |
| 06/30/1988 | WO1988004640A1 Method of collecting waste material and system therefor |
| 06/30/1988 | WO1988004639A1 Method and apparatus for collecting waste material |
| 06/07/1988 | US4748787 Pipe flange fire-proofing kit and process |
| 05/31/1988 | CA1237374A1 Trench duct and cover assembly |
| 05/24/1988 | US4745716 Structural water control |
| 05/11/1988 | DE3636895A1 Device for receiving lines |
| 04/05/1988 | US4735022 Concrete masonry block and stud wall construction system |
| 03/31/1988 | DE3632783A1 Masonry-wall extractor |
| 03/22/1988 | US4731967 Chimney construction |
| 03/03/1988 | DE3632950A1 Building comprising prefabricated concrete compound units, in particular hall |
| 03/02/1988 | EP0257146A1 Seal for an opening to receive a pipe |
| 01/26/1988 | US4720953 Partition with built-in floor-cable riser |
| 01/21/1988 | DE3623071A1 Multi-shelled system-built chimney |
| 01/05/1988 | US4716698 Wall system with split pole for lay-in wiring |
| 12/23/1987 | DE3620619A1 Set of structural elements for fair stands and the like |
| 12/23/1987 | CN86208426U Double-tower type ventilating cover used for sawtooth-shope workshape of printing and dyeing mill |
| 12/22/1987 | US4713918 Modular wall system |
| 12/17/1987 | DE3619529A1 Cladding element |
| 12/09/1987 | EP0248327A2 Method of making an air-, waste gas chimney for gas firing devices in buildings |
| 11/25/1987 | EP0246372A1 Prefabricated and modular chimney facade |
| 11/11/1987 | EP0244407A1 Method of preparing a hospital room or the like |
| 11/10/1987 | US4704840 Process of filling a space |
| 11/10/1987 | US4704828 Snap together window well |
| 11/05/1987 | DE3714053A1 Lift with lightweight cylindrical cabin |
| 11/03/1987 | US4703600 Vertically assembling box type blocks |
| 10/08/1987 | DE3642656A1 Removable wall cladding for fastening on a masonrywork structure |
| 10/08/1987 | DE3611539A1 Sound-insulated station building |
| 09/17/1987 | DE3607839A1 Production and process of a double-sided flame-retardant, insulating, sound-absorbing compartment panel for walls and ceilings and for cable partitioning - with the use of hot-dip galvanised general purpose mounts |
| 09/10/1987 | DE3700700A1 Set of chimney elements which is unsusceptible to moisture |
| 08/20/1987 | DE3604324A1 Installation wall element |
| 08/18/1987 | US4686807 Structurally reinforced, pre-fabricated and modular chimney facade system |
| 08/13/1987 | DE3604145A1 Cladding, in particular of a chimney head |
| 07/30/1987 | DE3602422A1 Device for end-side sealing, in particular of cable ducts |
| 07/01/1987 | EP0227434A2 Electrical services pole |
| 06/19/1987 | DE3544612A1 Cladding for rectangular chimneys |
| 06/04/1987 | DE3542318A1 Wall lead-in for pipelines |
| 06/02/1987 | US4669244 Fire stop |
| 05/21/1987 | DE3540712A1 Heating duct |
| 05/21/1987 | DE3540097A1 Set of structural elements for renovating chimneys |
| 05/14/1987 | DE3638195A1 Multi-shelled chimney |
| 05/12/1987 | US4664024 Thermally insulated window with ventilation ducts |
| 04/23/1987 | DE3536156A1 Prefabricated pipe element, in particular for chimneys |
| 04/14/1987 | US4656802 Vent pipes for cinder block walls |
| 04/01/1987 | EP0216497A2 Use of fibrous mat-faced gypsum board in shaft wall assemblies and improved fire-resistant board |
| 02/26/1987 | DE3529479A1 Purpose-made block, in particular for chimneys |
| 02/25/1987 | EP0211049A1 Partition with built-in floor-cable riser |
| 02/24/1987 | US4645037 Elevator escape structure |
| 02/12/1987 | DE3527220A1 Pipe passage for walls of building structures |
| 02/03/1987 | US4640403 Gravity-conveyor chute section |
| 01/28/1987 | EP0209815A2 Mantle block for multiple-casing chimneys |
| 01/07/1987 | CN85205261U Anticorrosive smoke-venting unit |
| 01/06/1987 | CA1216124A1 Board floors |
| 12/30/1986 | US4631881 Office screens and partitions |
| 12/09/1986 | US4627469 Composite structure duct |
| 12/02/1986 | US4625480 Underfloor assembly and cable distribution system and cable trench therefor |
| 11/05/1986 | EP0200514A1 Improvements in office screens and partitions |
| 11/04/1986 | CA1213575A1 Fire stop |
| 10/29/1986 | EP0199133A2 Chimney pipe insulating sheath of mineral fibres, and a pipe insulated in this way |
| 09/23/1986 | US4612746 Trench duct and cover assembly |
| 09/23/1986 | US4612745 Board floors |
| 09/02/1986 | CA1210606A1 Chimney cap |
| 08/20/1986 | EP0191104A1 Vertically assembling box type blocks |
| 08/12/1986 | CA1209395A1 Cooling and heating air jet device in building interior or exterior structure |
| 07/31/1986 | WO1986004377A1 Partition with built-in floor-cable riser |
| 07/22/1986 | US4602124 Ducting system for wiring having channel alignment interface members |
| 07/08/1986 | US4599252 Fibers, formed into particles, treated with binder |
| 07/08/1986 | CA1207140A1 Method of making a fibros thermally insulating layer of coherent structure, a layer made by this method, and a thermally insulating element provided with such a layer |
| 07/02/1986 | EP0185744A1 A method and a tool for increasing the width in the clear of a chimney. |
| 06/19/1986 | WO1986003539A1 Method of preparing a hospital room or the like |
| 06/10/1986 | US4593510 Pre-fabricated and modular chimney facade system |
| 06/10/1986 | US4593507 For distribution of electrical conductors |
| 04/29/1986 | US4584807 Composite soffit of plastic material and furring strips |
| 04/23/1986 | EP0178839A2 Vent cover |
| 03/05/1986 | EP0173182A1 Lifting and pivoting device for the emptying section of a tubular rubble chute |
| 03/04/1986 | US4573400 Aluminosilicates |
| 01/16/1986 | WO1986000391A1 A method and a tool for increasing the width in the clear of a chimney or the like |
| 12/31/1985 | US4561558 Vent cover |
| 12/18/1985 | EP0165018A2 A weather-proof vent for use in building construction |
| 12/10/1985 | CA1197659A1 High temperature chimney |
| 11/21/1985 | WO1985005140A1 Vertically assembling box type blocks |