Facsimile apparatus
CA 1323945 C · Owner: Kawano, Keiji · Inventors: Kawano, Keiji; Nakagawa, Hidetoshi; Miyazaki, Masakatu
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A facsimile apparatus which is selectively connected to an office line together with an external telephone set having a ring back tone generator and is constituted by an internal telephone set and a facsimile main body, includes an extension channel an office line, channel, a call key, a call signal generator first to, third switches, and a controller. The extension channel connects the external and internal telephone sets to each other. The office line channel connects the external and internal telephone sets to the office line. The call key is used to call the external telephone set. The call signal generator outputs a call signal to the ring back tone generator. The first switch switches …
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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 November 2, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 2, 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.