Manual ophthalmoscope
CA 1202510 A · Owner: Heine Optotechnik G.M.B.H. & Co. Kg · Inventors: Schmidt, Otto H.; Heine, Helmut A.; Rosenbusch, Helmut W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The inventive manual ophthalmoscope is provided with a housing 1 which is closed on all sides and in which the optical components 7, 8, 9, 13, 14 are housed in an entirely dustproof manner. The necessary switching operations for interposing correction lenses 15 16, lighting, field masks, color filters etc. into the illumination and/ or observation light path 2, 3 are effected by electromagnetic drives 17, 18, 19, 20 which are adapted to be operated by means of operating elements 21 22, 23 provided, on the outside of housing 1 in optimum positions from an ergonomic point of view. The display of refraction values of correction lenses 15, 16 interposed into the observation light path as well …
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 April 1, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 1, 2003.
- 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.