Recording tape cartridge
CA 1187172 A · Owner: Hitachi Maxell, Ltd. · Inventors: Ogiro, Kenji; Gotoh, Shinichi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract:, A recording tape cartridge comprises a cartridge case, a lid member having a front plate mounted on the case to be rotatable between a closed position and an open position. An opening in the bottom portion of the front plate receives a standard pin of a recording device. An abutting device projects from the front of the bottom wall of the case to protrude into the opening of the lid member up to a position substantially corresponding to the middle of the thickness of the front plate when the lid member is in its closed position. This arrangement effectively prevents dust or other dirt entering the case and ensures that any scratches on the front surface of the case are …
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 May 14, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 14, 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.