Cryopump with improved second stage array
CA 1268048 C · Owner: Bartlett, Allen J. · Inventors: Bartlett, Allen J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A second stage cryopanel array suitable for both concentric refrigerators and side entry cryopumps is formed of two groups of semi-circular baffles mounted to respective L-shaped brackets. The array sections can be independently positioned about a second stage of a refrigerator.
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 April 24, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 24, 2007.
- 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.