Binding element
CA 1099762 A · Owner: Minnesota Mining And Manufacturing Company · Inventors: Giulie, Joe D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
913,790, ABSTRACT, A binding element adapted for binding an apertured stack of sheets into a book. The binding element comprises a first binding strip from which project a plurality of spaced studs adapted to be positioned through the apertures; and a second binding strip having a plurality of openings sized to freely receive the studs to afford positioning the second strip over ends of the studs projecting beyond the stack of sheets. Blocks on the second strip can then be pressed into the openings to forcefully engage the studs extending through the opening with a tooth along the wall of the opening so that the tooth will indent the stud and maintain the position of the stud in the second …
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 21, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 21, 1998.
- 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.