One piece peripherally ribbed sheet metal door
CA 1135123 A · Owner: Greene, Carl B. · Inventors: Greene, Carl B. Iii; Greene, Carl B.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A single generally rectangular panel member is provided including first and second pairs of opposite sides. The panel member defines first peripherally extending generally straight first marginal fold zones along which corresponding marginal portions of the panel member project and extend. The marginal portions are each reversely bent along the first fold zones over the first side of the panel member and each of the marginal portions includes successive second and third fold zones, between which corresponding second marginal areas of the marginal portions are defined along which, the marginal portions are bent at generally right angles, toward the second and first sides of the panel member …
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 9, 1982. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 9, 1999.
- 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.