Pushbutton switch and integral lamp for telephone dials
CA 1180741 A · Owner: Nortel Networks Corporation · Inventors: Brown, Michael; Johnson, David W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure, A combined pushbutton and lamp for a telephone dial has two housings connected together to form an enclosure for a lamp and a switch. A pivoted pushbutton is mounted on the housings with a center part over the, lamp, pivot members on one side of the center part fitting on pivots or one of the housings and a lever extending on the other side of the center part and actuating the switch. A bezel member snaps over the center part of the pushbutton and holds it assembled to the housings. The lamp extends up into the center part of the pushbutton which has restricted movement the lever, amplifying this movement to actuate the switch. - i -
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 January 8, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 8, 2002.
- 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.