Electronic mail sensor
CA 2397142 C · Owner: Wallace, Carolyn · Inventors: Wallace, Carolyn
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An electronic mail sensor for informing a user when something has been put into a mailbox includes a door coupled to a mailbox for selectively covering an open end of the mailbox. A transmitter assembly is coupled to the mailbox adjacent the open end and includes a sensor for detecting when the door is in an open position. The transmitter assembly further includes a transmitter operationally coupled to the sensor for transmitting a signal when the door is in an open position. A receiver assembly includes a receiver for receiving the signal the receiver assembly includes a mail indicating light operationally coupled to the receiver such that the mail indicating light is illuminated upon 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
- Filed August 8, 2002 and granted May 31, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 8, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 8, 2024.
- 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.