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Expired Canadian patentCanada

Magnetic tape recording and/or reproducing apparatus

CA 1110357 A · Owner: Matsushita Electric Industrial Co. Ltd. · Inventors: Sasaki, Toshiharu; Urata, Yoshihito; Tatekawa, Masaichiro

CIPO record

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

A magnetic tape recording and/or reproducing apparatus having two electric motors, one of which is a capstan driving motor and the other is a reel driving motor. A tape drive capstan is directly driven by the capstan driving motor without any belts, and transports magnetic tape at a constant velocity by co-action with a pinch roller during recording or reproducing of the magnetic tape. The apparatus has two tape winding reels and the magnetic tape is wound up by either of the two tape winding reels according to the direction in which the magnetic tape is required to be transported. Each of the two tape winding reels is respectively rotated through idle wheels by the reel driving motor, …

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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 6, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 6, 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.
FiledJune 7, 1978
GrantedOctober 6, 1981
Term endedOctober 6, 1998
Patent numberCA 1110357 A
Classification (IPC)G11B5/00 +2 more

Timeline

Timeline From CIPO dates

1979198119831985198719891991199319951997Application filedJune 7, 1978Patent grantedOct 6, 1981Term endedOct 6, 1998

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.