Knock-down starting platform for a roof seaming machine
CA 1066254 A · Owner: Butler Manufacturing Company · Inventors: Martin, James W.; Hardwick, John R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A knock-down starting platform for a roof seaming machine includes spaced side frame rails joined at one end with a platform on which a roof seaming machine may be supported and joined at their other end with a movable gate or bridge. The bridge carries a member which is adapted to be secured relative to a roof panel to support the rails and platform on a roof with the platform supported beyond the edge of the roof and the rails disposed in straddling relationship to the seam between adjacent panels. The side frame rails and bridge comprise a plurality of releasably connected together parts separable from one another to enable the starting platform to be disassembled for storage, shipment …
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 November 13, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 13, 1996.
- 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.