Expired Canadian patentCanada
Retro-reflecting globules for road surface marking
CA 1102768 A · Owner: Eigenmann, Ludwig · Inventors: Eigenmann, Ludwig
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Improved retro reflecting globules of vertically asymmetrical configuration and of geometry such as to provide at least another asymmetry in plain view, to provide optimum light response to light beams impinging under differing zenithal and azimuthal angles.
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 June 9, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 9, 1998.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJuly 4, 1979
GrantedJune 9, 1981
Term endedJune 9, 1998
Patent numberCA 1102768 A
Classification (IPC)E01F9/52 +2 more
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.