Coin operated telephone operation monitoring switch mounting arrangement
CA 2004018 C · Owner: Tansky, John Laurence · Inventors: Mcgarry, Patrick J.; Logan, Edward F. Jr.; Tansky, John Laurence
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An event monitoring system for payphones is described. Particularly an arrangement for monitoring events such as the removal of the front cover, vault door and coin box is described. Sensors attached to brackets generate signals indicative of front cover, vault door and coin box removal are sensed by a monitoring circuit and sent to a central telephone office as appropriate. The brackets allow easy mounting of the sensors using existing payphone housing hardware, surfaces and cutouts. Consequently this mounting arrangement may he used to retrofit standard payphones using only pre-existing mounting locations and holes to include event monitoring capability. The sensors and monitor circuit …
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
- Filed November 28, 1989 and granted July 5, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 28, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 28, 2011.
- 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.