Paging apparatus without a power switch
CA 1325040 C · Owner: Wagai, Kiyoshi · Inventors: Nakazawa, Takeo; Wagai, Kiyoshi; Sekigawa, Tatsuaki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A paging apparatus having no power switch connected to the battery is provided. The paging apparatus includes a receiver for receiving signals broadcast over one or more radio channels. A detachable first memory stores one or more identification numbers corresponding to the paging apparatus. A manually operable switch is provided primarily for switching a user selectable operating condition of the paging apparatus such as the, alarm mode, i.e. switching from an audible/visual alarm to a visual alarm. A second memory stores the identification number transferred from the first memory and a control circuit is responsive to actuation of the manually operable switch to initiate the transfer of …
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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 December 7, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 7, 2010.
- 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.