Automatic grinding machine
CA 1298087 C · Owner: Dafnoulelis, Christos V. · Inventors: Ewing, Paul C. Jr.; Dafnoulelis, Christos V.; Dawson, Thomas F.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Applicant: Dawson et al. For: Automatic Grinding Machine ABSTRACT OF INVENTION, A machine for grinding an object such as a printed circuit, board coupon having a region to be exposed and having a novel control track that has at least a portion of the rear edge of the track precisely located with respect to a predetermined grinding depth for the region is provided according to this invention. The grinding machine includes means for engaging the object with an abrasive device and means interconnected with, the control track on the object for disengaging the object and, the abrasive device when a break in the track has been ground. DR-150J
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 March 31, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 31, 2009.
- 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.