Seat support for revolving chairs
CA 1164782 A · Owner: Steifensand, Friedrich M. · Inventors: Steifensand, Friedrich M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A seat used for swivel chairs in particular those of, the kind used in offices that bears on its underside an adjustment device and is, in addition, provided with a covering on its underside. The covering is mainly attached to the underside of the seat. The adjustment device is located on the underside of the covering and the covering has a rail that surrounds the adjustment device and protrudes downwards. The height of the rail is such that it conceals the adjustment device from view when the seat is viewed from the side.
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted April 3, 1984. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 3, 2001.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.