Method of producing floors and/or surface layers on roofs or the like, and floors and surface layers produced according to the method

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 July 4, 1972. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 4, 1989.
• We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.