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:
Jan. 30, 1990
Filed:
May. 09, 1988
Robert L Hanson, St. Paul, MN (US);
John E Dunstan, St. Paul, MN (US);
Minnesota Mining and Manufacturing Company, St. Paul, MN (US);
Abstract
Digital videocassettes are encoded by punching out breakaway tabs to permit a sensing mechanism on a recorder to identify key characteristics of each cassette. The encoding can be changed when the breakaway tabs are carried by an insert that can be remvably affixed to the cassettes. By employing such an insert, a number of problems are avoided such as possible contamination of the cassette and/or recorder by loose tabs. The tabs of the insert do not need to be breakaway when the inserts are initially formed to provide desired codes.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile