Tape cassette
CA 1194995 A · Owner: Dictaphone Corporation · Inventors: Hoover, John W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A thumb-sized tape cassette having a rectangular housing with top, bottom, front, back and side walls. The front wall is provided with a center opening and side openings disposed on opposite sides of the center opening. A tape member which suns between supply and take-up reels within the cassette, is guided in a run behind the front wall and is accessible through the front wall openings. A pressure-pad spring is supported on a post within the housing, this spring being formed as an integral continuous-surfaced leaf spring having only two bends therein to define a central section between the two bends and a leg extending from each of the respective bends. A pressure pad is secured to each …
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 October 8, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 8, 2002.
- 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.