Electronic watch
CA 1325339 C · Owner: Takahashi, Osamu · Inventors: Miyazawa, Osamu; Takahashi, Osamu; Hayakawa, Motomu
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An electronic watch provided with an oscillator circuit, a frequency divider circuit for dividing an output of the oscillator circuit, an actuator driven intermittently on N Hz frequency according to an output of the frequency divider circuit, a storage for storing a kinetic energy of the actuator a release, controlling device for releasing an energy stored in the storage as a smooth energy of rotation a pointer, turned on the energy of rotation a readjusting de-, vice for stopping the pointer from turning at the time of correction, and a divided state holding control circuit for retaining a state of the frequency divider circuit at the time of actuation of the readjusting device when the …
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 December 21, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 21, 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.