Demountable partition
CA 1055223 A · Owner: National Gypsum Company · Inventors: Dawdy, Jack A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A wall of gypsum wallboard adhered indirectly to studs, in which the studs have an intermediate material, which has a preplanned degree of weakness affixed to the stud face, and to which material the wallboard is adhered, to hold it relative to the studs whereby on removal of the wallboard, the relatively dried bead of adhesive is easily removed from the wallboard back side and/or the stud face, leaving both in condition for reuse with new adhesive, in constructing a new wall.
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 May 29, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 29, 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.