Tank tightness test apparatus probe
CA 1292372 C · Owner: Jacob, Allan S. · Inventors: Jacob, Allan S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A thermal probe for use in a tightness testing apparatus for an underground storage tank provided with a fill pipe extending from ground level down to the tank and, including a mechanical compression ring-shaped seal which, sealingly engages the outer periphery of the access or fill pipe of an underground storage tank and expands to form a leak tight connection therewith.
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 November 26, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 26, 2008.
- 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.