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:
Feb. 28, 1989
Filed:
Jun. 09, 1988
Applicant:
Inventors:
James K Knudsen, St. Paul, MN (US);
David M Perry, St. Paul, MN (US);
Assignee:
Minnesota Mining and Manufacturing Company, St. Paul, MN (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11B / ; G11B / ;
U.S. Cl.
CPC ...
360104 ; 360103 ; 360122 ; 360129 ; 360105 ;
Abstract
For use with a stretched surface recording disk, a recording head having a spherical surface and a series of parallel grooves adjacent the disk and a support arm assembly which maintains the recording head in proper attitudinal relationship to the disk.
Knudsen, James. (1989). Recording head and support arm for stretched surface recording medium (U.S. Patent No. 4809104). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4809104
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile