Device comprising a high voltage electron
CA 1099416 A · Owner: N.V. Philips Gloeilampenfabrieken · Inventors: Klokkers, Frits H.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
PHN.8737, 6.2.1978, ABSTRACT:, A device comprising an electron tube having two electrodes wherebetween a potential difference generated by a high voltage generator exists said tube, being provided with a protection circuit against excess voltages which is connected between these electrodes. The protection circuit consists of a series network of a capacitor, having a capacitance which is substantially higher than the parasitic capacitance between the electrodes, and a number of diodes whose forward direction extends from the electrode of highest potential to the electrode of lowest potential.
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 14, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 14, 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.