Automatic flag for rural mailbox
CA 2013992 C · Owner: Windrem, Ron · Inventors: Windrem, Ron
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to a mailbox flag which is used to indicate to the owner of the mailbox when the mail has been delivered. The flag itself comprises an elongated are of at least substantially uniform weight distribution from end to end of the arm. The arm has a mounting region for pivotally mounting it to a mailbox with the mounting region being located off-center and closer to one end than the other end of the arm thereby providing long and short ends and a weight imbalance in the arm when it is mounted to the mailbox. The short end of the arm is bent preferably at 90° to the remainder of the arm to provide an actual flag portion on the arm without affecting its weight …
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 April 5, 1990 and granted July 26, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 5, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 5, 2012.
- 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.