Magneto-optical recording apparatus and energizing circuit for use in such a magneto-optical recording apparatus
CA 1319986 C · Owner: Bakx, Johannes Leopoldus · Inventors: Hoeven, Petrus Christianus Johannus; Bakx, Johannes Leopoldus
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Magneto-optical recording apparatus and energizing circuit for use in such a magneto-optical recording apparatus. A magneto-optical recording apparatus provided with a magnetic field modulator (8) is revealed. The magnetic-field modulator (8) comprises a field coil (18) for generating a magnetic field and switching means (11,12,15,16,22) for coupling at least one terminal (17) of the magnet coil (18) to a first potential point (10) at a first potential (Vp) or a second potential point (14) at a second potential (Vn) depending on the logic value of a control signal (Vs) in order to, produce in the field coil an alternating current whose polarity depends on the logic value. The field coil …
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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 July 6, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 6, 2010.
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Timeline
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.