The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 24, 1982
Filed:
Mar. 28, 1980
George F Turner, Ingatestone, GB;
Ciba-Geigy AG, Basel, CH;
Abstract
A film sheet cassette is described which comprises a frame to which is attached a flat fixed front plate and a flat fixed back plate and located between them a movable pressure plate which is held in operative position when the cassette is closed by the force of magnetic repulsion exerted between an array of permanent magnetic poles of alternating polarity which is integral with the pressure plate and a second array of permanent magnets attached to a parallel top plate supported in the frame of the cassette. The cassette is opened by sliding the top plate so that the magnets of each array then attract each other.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile