Transmitter for use in a remote control apparatus
CA 1164982 A · Owner: Hitachi, Ltd. · Inventors: Suzuki, Mitsuo; Matsuoka, Shigero; Yamauchi, Kogi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A transmitter for use in a remote control apparatus for controlling a garage door operator motor on the basis of a command signal from the transmitter is disclosed in which a buzzer is provided which produces a sound when a transmitting switch is closed to send out the command signal.
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 April 3, 1984. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 3, 2001.
- 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.