Improved carrier for testing circuit boards
CA 2125669 C · Owner: Holmes, Robert J. · Inventors: Holmes, Robert J.; Liken, Peter A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention is an improvement in a carrier (10) of the type used for testing circuit boards (20) in an environmental test chamber (11). The improvement includes a plurality of frame-supported, spaced-apart shelves (31, 33, 35). Pairs of shelves are used to hold circuit boards (20) being tested. The position of at least one shelf (31, 33, 35) in such a pair is adjustable to select the proper dimension to support circuit boards (20) of any of several particular sizes. In a highly preferred arrangement, shelves (31, 33, 35) are arranged in two groups (91a, 91b). At least one of the two or more shelves (31, 33, 35) in each group (91a 91b) is adjus-, table so that the carrier (10) …
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 December 8, 1992 and granted June 12, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 8, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 8, 2014.
- 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.