Vandal-resistant shield for telephone keypad
CA 1232094 A · Owner: Morse, Milton · Inventors: Morse, Milton
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A standard keypad comprises a rigid support plate having a front face and formed with an array of throughgoing apertures, respective push-buttons projecting at the apertures through the plate past the front face thereof and a continuous, flexible membrane overlying the front face and formed in front of each of the push-buttons with a relatively thick projecting portion. Thus the membrane seals the apertures around the buttons while allowing same to be depressed via the projecting portions. The switch associated with the push-buttons urges the push-buttons and the overlying thick portions forward from the front face. A shield assembly has a rigid shield plate formed with an array of …
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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 26, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 26, 2005.
- 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.