Communication device having a speaker and microphone
CA 2118718 C · Owner: Motorola, Inc. · Inventors: Pawlish, Joy N.; Cohodes, Suzanne Y.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A radio or speaker-microphone unit (10) includes a housing having first (11) and second (12) portions. A speaker (22) is disposed in one of the portions and a microphone (23) in the other of the portions. The portions are movable between first and second relative positions, with one or the positions providing a handset configuration and the other providing a speaker-microphone configuration. A switch senses the relative position of the housing portions and adjusts the gain of an audio amplifier.
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
- Filed September 28, 1992 and granted February 23, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 28, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 28, 2014.
- 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.