| Patents for E04F 17 - Vertical ducts; Channels, e.g. for drainage (3,992) |
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| 03/15/2000 | CN2368909Y Quick garbage collecting channel |
| 03/15/2000 | CN2368908Y Light exhaust pipe |
| 03/08/2000 | CN1246572A Multifunctional pipeline of storied building for ventilation and discharging waste gas and smoke |
| 02/23/2000 | CN2365317Y Special duct in building for the vertical disposal of refuse |
| 02/23/2000 | CN2365316Y Kitchen top cabinet avoiding pipeline |
| 02/23/2000 | CN2365315Y Plastic decorative fender enclosure |
| 02/17/2000 | DE19916531A1 Lift mechanism room with double door, used in multi storey buildings |
| 02/15/2000 | CA2004722C Door/ledge assembly for gravity chute |
| 02/09/2000 | CN1243905A Air conditioning building and its construction method |
| 02/02/2000 | CN2361729Y Steel fibre concrete heating inlet |
| 02/02/2000 | CN2361728Y 屋顶通风器 Roof ventilators |
| 01/26/2000 | CN2360512Y Enamel ventilation duct |
| 01/26/2000 | CN2360511Y Self-sucking fume extracing chimney |
| 01/26/2000 | CN1242461A Anti-oxide etching rain downpipe |
| 01/19/2000 | CN2359384Y Safety flue |
| 01/19/2000 | CN2359383Y Funnel cap for air-out |
| 01/05/2000 | CN2357065Y Detachable air diffuser |
| 12/29/1999 | CN2356095Y Open type hollow building blocks capable of mounting water and electric pipeline |
| 12/23/1999 | DE19827681A1 Ventilation tube for ventilation plant in building |
| 12/22/1999 | EP0964631A2 Head wall for a hospital room |
| 12/22/1999 | CN2355034Y Ventilation channels for construction |
| 12/16/1999 | DE19825477A1 External wall chimney for buildings |
| 12/15/1999 | EP0746659B1 Drop delivery chute |
| 12/09/1999 | DE19826196A1 Loading door for domestic refuse chute |
| 12/08/1999 | CN1237672A Air channel and its making and forming method |
| 12/07/1999 | US5996294 Utility distribution system for open office plans and the like |
| 11/24/1999 | EP0958641A1 Conduit profile |
| 11/24/1999 | EP0958640A1 Feeder post |
| 11/24/1999 | EP0958205A1 Isolated insertion chute for suction-operated garbage disposal systems |
| 11/24/1999 | CN1046826C Lower part for an installation duct |
| 11/17/1999 | EP0957550A1 Installation channel |
| 11/17/1999 | EP0957046A1 Lock for housed refuse receptacles |
| 11/17/1999 | EP0956188A2 Method and device for shaping the surface of extruded profiles |
| 11/17/1999 | CN2349294Y Environment protection duct for waste of high building construction |
| 11/11/1999 | DE19731589C2 Verfahren und vorgefertigter Etageninstallationsblock zur Anordnung in einem oder als Versorgungsschacht von Neubauten Procedures and prefabricated floor installation block for placement in a utility shaft or as new buildings |
| 11/04/1999 | DE19819568A1 Fluid pipeline system incorporating information cable or line |
| 11/03/1999 | EP0953551A1 Prefabricated concrete element |
| 11/03/1999 | CN2346872Y Building exhaust duct false ogive structure |
| 11/03/1999 | CN2346871Y Kitchen exhaust fume duct |
| 11/02/1999 | US5974749 Floor-mounted, dust and debris disposal system |
| 10/28/1999 | WO1999054572A1 Mobile system for reducing the exhaust-gas pollution rate in the stagnant regions of the ground atmospheric layer |
| 10/27/1999 | CN2345619Y Guided prefabricated ventilation channel |
| 10/27/1999 | CN1232908A Design of building channel system for exhausting harmful gas from room to mid air automatically |
| 10/26/1999 | US5970664 Window well drain |
| 10/20/1999 | CN2344480Y Protective port equipment equipped on balcony |
| 09/29/1999 | CN2340832Y Sealed garbage channel for high rising building |
| 09/23/1999 | DE19814639A1 Lift installation for attachment to existing building of slab construction |
| 09/22/1999 | CN2339660Y Fully-closed dump refuse bin |
| 09/21/1999 | US5953818 Method of kerfing insulation boards and duct liners and the like formed from said boards |
| 09/15/1999 | CN2338409Y Equipment for transporting and treating garbage from high buildings |
| 09/14/1999 | US5950385 Seismic and fire-resistant |
| 09/09/1999 | DE19809884A1 Safety fitting for grating covering entrance to light shaft for cellar |
| 08/26/1999 | DE19904394A1 Multi-function column for incorporation in external building walls |
| 08/25/1999 | EP0906995B1 Mantel block for a multiple-casing chimney |
| 08/24/1999 | US5941362 Drop delivery chute |
| 08/24/1999 | US5941258 Long reach, cable-suspended cleaning apparatus for building disposal chutes and method |
| 08/18/1999 | CN1225970A Building and manufacturing method for wall-frame type cooking-fume exhauster |
| 08/17/1999 | US5937601 Simulated brick chimney block |
| 08/12/1999 | WO1999028112A3 Method and device for shaping the surface of extruded profiles |
| 08/11/1999 | EP0935105A2 Frames made of hollow metallic profiles for mounting at the end of metallic ducts |
| 08/10/1999 | US5934993 Aeration structure in buildings |
| 07/28/1999 | EP0931982A2 Chimney flue pipe made of sleeve pipe sections and sealing means for such a joint |
| 07/28/1999 | CN2330735Y Circuit trough-board |
| 07/20/1999 | US5924477 Brick for heat exchangers |
| 07/14/1999 | CA2257441A1 Floor-mounted, dust and debris disposal system |
| 06/30/1999 | CN2326663Y Light efficient smoke-gas exhausting device for kitchen and toilet |
| 06/24/1999 | WO1999031335A1 Device at refuse chute |
| 06/24/1999 | CA2312719A1 Device at refuse chute |
| 06/23/1999 | CN2325458Y Air-duct preventing odour coming in |
| 06/17/1999 | WO1999030397A1 Feeder post |
| 06/16/1999 | CN2324220Y Antiwind wind power exhaust pipe |
| 06/16/1999 | CN2324219Y Large and small louver sheet scavenger fan |
| 06/10/1999 | WO1999029002A1 Conduit profile |
| 06/10/1999 | WO1999028112A2 Method and device for shaping the surface of extruded profiles |
| 06/10/1999 | WO1999028002A1 Pubococcygeal training biofeedback device |
| 06/10/1999 | DE19754183A1 Electro-installation conduit |
| 06/10/1999 | CA2311519A1 Method and device for shaping the surface of extruded profiles |
| 06/10/1999 | CA2311518A1 Conduit profile |
| 06/02/1999 | CN2321865Y Refuse duct |
| 05/26/1999 | CN2320717Y Junction groove and box for use in building |
| 05/26/1999 | CN2320716Y Air changer cabinet |
| 05/26/1999 | CN2320710Y Elevated floor crossbeam and distributing holder structure thereof |
| 05/26/1999 | CN1217410A Method and apparatus for one-time cast-forming superthin concrete air-duct |
| 05/20/1999 | DE19750537A1 Fireproof building element consists of concrete or cement-bonded material containing expanded polystyrene aggregate |
| 05/20/1999 | DE19747507A1 Interior wall cladding |
| 05/19/1999 | CN2319479Y Residence central smoke outlet for preventing return wind |
| 05/19/1999 | CN1216811A Indoor gas pipeline repairing and reinforcement method |
| 05/18/1999 | CA2254199A1 Cable raceways for modular system furniture |
| 05/12/1999 | CN2318315Y Pipeline garbage collecting and storage device |
| 05/12/1999 | CN2318314Y Multi-section changeable air duct |
| 05/06/1999 | DE19850094A1 Wall box for passage of air in and out of external wall |
| 05/05/1999 | CN2317274Y Adjustable air port |
| 05/05/1999 | CN2317273Y Concealed exhaust pipeline |
| 04/14/1999 | CN2314003Y Arched combined roof vent |
| 04/07/1999 | EP0906995A1 Mantel block for a multiple-casing chimney |
| 04/06/1999 | US5890326 Head wall for a hospital room |
| 03/18/1999 | DE19736587A1 Anti-condensation device for buildings |
| 03/18/1999 | DE19730355C1 Noise absorber for air duct in building glazing |
| 03/17/1999 | CN2310821Y Air duct hanging bracket device |
| 03/17/1999 | CN2310820Y Air duct hanging bracket |