Four piece elbow for a multi-tube heat exchanger
CA 2029299 C · Owner: Bronnert, Herve X. · Inventors: Bronnert, Herve X.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A multiple tube heat exchanger formed from a number of elbow members which when combined form a "U" shaped jacket, an elongate tubular section connected to the ends of the U-shaped jacket, a number of heat conductive U-shaped tubular members mounted in the jacket, a tube sheet mounted on the ends of said tubular members and tubular sections and a number of baffles for supporting the tubular members in a spaced relation from said tubular sections.
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 November 5, 1990 and granted October 25, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 5, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 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.