Laser apparatus for simultaneously generating mutually perpendicular planes
CA 2087560 C · Owner: Hamar, Martin R. · Inventors: Hamar, Martin R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A laser alignment apparatus is provided for generating a plurality of mutually perpendicular laser beams. The apparatus further includes rotatable beam diverters selectively hingedly moveable into or out of positions for diverting one of the laser beams. The beam diverters may be rotated about an axis coincident with the associated laser beam for sweeping laser planes. The laser planes swept by the respected beam diverters are mutually perpendicular to one another, and each laser plane is parallel to the other beams generated by the apparatus.
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 January 19, 1993 and granted August 24, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 19, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 19, 2015.
- 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.