Accessory holder for ring binder
CA 1306163 C · Owner: Steinfield, Robert J. · Inventors: Woodruff, Sterling; Steinfield, Robert J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An elongated tubular body is provided for reception within the confines of closed rings of a "ring binder" and with the body spaced radially inwardly from the inner surfaces of the rings sufficient to enable sheets of paper slidingly engaged with the rings to slide thereabout without interference with the tubular body. The tubular body includes a first side opposing the base of the "ring binder" ring assembly from which the rings are mounted and the body first side is stationarily secured to the base. A second side of the body remote from the first side has a saddle cut opening formed therein and a thin wall cover closely overlies the second side closing the opening and is guidingly mounted …
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 August 11, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 11, 2009.
- 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.