| Patents for E04F 11 - Stairways, ramps, or like structures; Balustrades; Handrails (7,719) |
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| 07/18/1989 | US4848578 Storage and/or transport container of plastics material |
| 07/18/1989 | US4848515 Portable swimming pool step device |
| 07/11/1989 | US4846600 Apparatus for forming tubular joints |
| 06/28/1989 | EP0321593A1 Handrail particularly for helicoidal staircases |
| 06/27/1989 | US4842784 Method of manufacturing a climbing step with embedded reflection plate |
| 06/27/1989 | US4841697 Glass panel mounting assembly |
| 06/20/1989 | US4840824 Stairtread facings and a co-extrusion method for their manufacture |
| 06/14/1989 | EP0320224A2 Hand rail safety bar |
| 06/13/1989 | US4838005 Stairway apparatus and method of manufacture |
| 06/06/1989 | US4835852 Method of installation of hardware |
| 06/01/1989 | WO1989004898A1 Method and construction elements for readapting dwellings |
| 05/23/1989 | US4832153 Attic stair insulating cover |
| 05/23/1989 | US4831706 Method of making spiral staircases |
| 05/18/1989 | WO1989004410A1 Handrail |
| 05/18/1989 | DE3736804C1 Device consisting of a light-guiding plate |
| 05/16/1989 | US4830341 Anchor for temporary safety fence |
| 04/27/1989 | DE3735254A1 Stair flight with prefabricated steps - has bolts passing through components adjustable in elongated holes |
| 04/25/1989 | US4823529 Deck construction |
| 04/25/1989 | US4823524 Apparatus for aiding people in walking up and down stairs |
| 04/19/1989 | EP0312488A2 Method and device to restore a staircase |
| 04/11/1989 | US4819391 Stair bracket |
| 04/06/1989 | WO1989002849A1 Underwater stairs |
| 03/23/1989 | WO1989002506A1 Step forming method and means |
| 03/15/1989 | EP0306776A2 A stair assembly unit for a staircase |
| 03/07/1989 | US4809955 Fence or railing |
| 02/28/1989 | US4807317 Modular ramp |
| 02/21/1989 | US4805879 Hand railing assembly |
| 02/09/1989 | DE3725422A1 Method of renewing the fair faces of a stair string consisting of wood |
| 01/26/1989 | DE3723821A1 Metallisches gleitschutzelement Metallic antiskid |
| 01/25/1989 | EP0300152A2 Fixation for a staircase |
| 01/17/1989 | US4798030 Modular support for staircase steps |
| 01/10/1989 | US4796866 Railing structure |
| 01/03/1989 | CA1247835A1 Joint structure for structural bar assembly |
| 01/03/1989 | CA1247834A1 Adjustable staircase |
| 12/27/1988 | US4793110 Foundation and building structure support system apparatus and method |
| 12/21/1988 | EP0160022B1 Adjustable staircase |
| 12/20/1988 | US4792015 Automatic escape ladder |
| 12/20/1988 | US4791764 Stair tread support |
| 12/15/1988 | WO1988009857A1 Non-corrosive security railing |
| 11/15/1988 | US4783939 Covering for improving worn out steps |
| 11/15/1988 | CA1244623A1 Non linear stair |
| 11/08/1988 | US4783188 Rail connector |
| 10/18/1988 | US4778032 Climbing step with embedded reflection plate |
| 09/29/1988 | DE3808425A1 Load-bearing structure which is to be prefabricated and intended for a staircase |
| 09/28/1988 | EP0283890A2 Prefabricated staircase construction for a flight of stairs |
| 09/27/1988 | US4773505 Sliding chute made to fall down stairs in an emergency |
| 09/01/1988 | DE3705809A1 Railing handrail and posts |
| 08/31/1988 | CN87100233A Extended-arm expandable apparatus for constructing floating roads |
| 08/30/1988 | US4767232 Hinge joint for tubular rail and post members |
| 08/30/1988 | CA1241176A1 Articulating, self-supporting staircase |
| 08/30/1988 | CA1241175A1 Attic staircase |
| 08/25/1988 | WO1988006218A1 Structural element |
| 08/25/1988 | WO1988006137A1 Elevator escape structure |
| 08/24/1988 | EP0279202A2 Stair railing |
| 08/17/1988 | EP0135553B1 Fencing and like structures |
| 08/04/1988 | DE3702128A1 Design for a balcony railing having alignable posts |
| 08/03/1988 | EP0276423A2 Self-supporting staircase with component units |
| 07/28/1988 | DE3644988A1 Staircase step profiled edge piece - accommodates inserted rubber strip hollowed out and with expansion grooves on underside |
| 07/27/1988 | EP0275422A2 Z-section finishing strip for protection of ceramic tiles on stair steps or the like |
| 07/19/1988 | US4757653 Stair bracket system |
| 07/14/1988 | DE3644539A1 Attic staircase which can be installed in a hatch opening |
| 07/07/1988 | DE3643408A1 Door having a ramp for bridging over differences in level |
| 07/06/1988 | EP0273517A2 Flooring edge finisher |
| 06/28/1988 | US4753420 Railing system |
| 06/21/1988 | US4752060 Support devices for stanchions |
| 06/16/1988 | DE3641693A1 Handrail for railings |
| 06/14/1988 | US4750713 Assembly of handrail |
| 06/01/1988 | EP0268889A1 Profile for the edges of steps |
| 06/01/1988 | DE3639800A1 Handrail for railings |
| 05/31/1988 | US4747243 Collapsible porch |
| 05/19/1988 | DE3637807A1 Self-supporting unit-built staircase |
| 05/11/1988 | DE3636874A1 Edge-guard profile, in particular stair nosing, and process for fastening it on a stair |
| 04/20/1988 | EP0264085A2 Stairway handrail |
| 04/20/1988 | EP0263916A2 Modular support for staircase steps |
| 04/19/1988 | US4738054 Ceiling access door assembly |
| 04/13/1988 | EP0263600A2 Spiral staircase |
| 04/07/1988 | DE3633039A1 Junction connector for tubes, in particular for railings, fences and racks |
| 03/24/1988 | DE3632081A1 Process for producing any required right-angled flights of stairs from standardised stairs |
| 03/22/1988 | CA1234273A1 Stair case step assembly |
| 03/15/1988 | US4730425 Returned stair tread having moisture compensated joint and method for making same |
| 03/10/1988 | DE3630407A1 Interior lighting arrangement in large vehicles for carrying passengers, in particular buses |
| 02/04/1988 | DE3625332A1 Pre-tensioned spiral newel staircase |
| 02/02/1988 | US4722374 Method for fabricating wooden circular stair with balustrade |
| 02/02/1988 | US4722164 Non-linear stair |
| 02/02/1988 | CA1232161A1 Stair and balcony railing |
| 01/21/1988 | DE3624151A1 Load-bearing structure for a flight of stairs |
| 01/21/1988 | DE3623174A1 Process for producing a step, and step produced by this process |
| 01/21/1988 | DE3623173A1 Prefabricated step |
| 01/20/1988 | EP0253141A1 Prefabricated building element in particular staircase |
| 01/07/1988 | EP0251826A2 Balustrades |
| 12/22/1987 | US4714369 Rail connector |
| 12/17/1987 | DE3619993A1 Railing or the like |
| 12/17/1987 | DE3619992A1 Railing |
| 12/15/1987 | US4712264 Modular step ramp |
| 12/01/1987 | US4709520 Stair brackets and stair structure |
| 11/24/1987 | US4707957 Preassembled platform stairway |
| 11/19/1987 | EP0246076A1 Non-corrosive security railing |
| 11/19/1987 | EP0246057A2 Interlocking pivot device for adjustable ballusters |
| 11/17/1987 | US4706425 Stair unit structure |
| 11/17/1987 | US4706367 System and method for mechanically joining handrailing members |