Snorkel
CA 1057452 A · Owner: Blanc, Max A. · Inventors: Blanc, Max A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A snorkel in which the air intake end. of the breathing tube is provided with an air entrapping cap which is in communication with the ambient air through a tortuous air passage defined between the cap and the tube so that when the air intake end of the snorkel is submerged water intake is retarded and water is readily purged by blowing exhalation of the diver.
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 July 3, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 3, 1996.
- 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.