Detectable earplug
CA 1317232 C · Owner: Leonard, David A. · Inventors: Leonard, David A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A molded detectable earplug assembly includes a pair of earplugs into which a metal, magnetic or X-ray detectable insert is provided. Preferably the earplugs are in pairs connected by a cord. The metal, magnetic or X-ray detectable sphere is detectable by metal, magnetic or X-ray detecting equipment and will announce the presence of an earplug in a product which was processed in a food, beverage, tobacco or pharmaceutical, processing line.
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 May 4, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 4, 2010.
- 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.