Video tape recorder
CA 1075809 A · Owner: N.V. Philips Gloeilampenfabrieken · Inventors: Van Slageren, Nanno
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
7751, ll.8.1975, ABSTRACT:, Transversely writing and reading video cassette recorder or a similar apparatus for recording and/or reproducing wide-band signals on/from magnetic tape which, apparatus is provided with a rotating head disc and a tape guide system with concave guide members for guiding the tape past the circular path of the heads in a local condition of concave curvature. In addition to the concave guide members the tape guide system at either side of the head disc cowprises convex guide members with a radius of curvature which substantially equals that of the concave guide members. The concave guide members belong to a pressure piece which in the operating condition of the …
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 15, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 15, 1997.
- 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.