Laser apparatus with a focus control unit
CA 1265206 C · Owner: N.I.S. Engineering Limited · Inventors: Foulkes, Thomas L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Laser apparatus for performing operations on a workpiece comprises a laser source supplying a laser beam which may be focused onto the workpiece by a focusing unit . A representation of the surface of the workpiece is generated by sensing means which are associated with a computer . An image of the surface can be displayed on for, example, a VDU which allows an operator to determine a line across which the beam should scan the, laser source is then operated and the beam 4 is caused to scan along the selected line by appropriate movement of focusing unit by a control unit associated with the computer . Focusing unit may be of variable focal length so as to ensure that the beam is always …
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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 January 30, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 30, 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.