Dental and medical x-ray apparatus
CA 1111151 A · Owner: Thoro-Ray Inc. · Inventors: Weiss, Mortimer E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Dental X-ray apparatus characterized by very substantial reductions in radiation exposure of the patient, comprises: a) an X-ray tube with a cathode providing an electron beam b) a beam target carried by said tube and located axially rearwardly thereof to be received rearwardly into a patient's mouth c) the target angled relative to the said axis to produce a radiation pattern that extends forwardly of the target and also rearwardly and sidewardly of the target, said X-ray tube including structure to cause the electron beam to form a beam impingement spot on the target of sufficiently small size that radiation emanating from said spot and directed toward a tooth and film produce a sharp …
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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 October 20, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 20, 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.
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.