Electrical signal separating device
CA 1074909 A · Owner: B.S.H. Electronics (Manchester) Limited · Inventors: Kropielnicki, Barbara E.; Kropielnicki, Jerzy J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A device which can be interposed between a radio and an electrically heated window so as to enable the window to be used as an aerial even when it is connected to a d.c. power source to effect heating of same. The device comprises a blocking circuit having mutually coupled coils interposed between the d.c. power source and the terminals of the heating element of the window.
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 1, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 1, 1997.
- 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.