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:
Nov. 08, 1983
Filed:
Mar. 31, 1981
Applicant:
Inventors:
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C / ;
U.S. Cl.
CPC ...
365-2 ;
Abstract
A magnetic bubble memory device comprises a common package accommodating a lurality of pairs of memory chips. In each pair, the two chips have bubble propagation patterns in confronting relation which are mirror images of each other and additionally angularly offset by 180. Electrical connecting leads between the chips and the outside of the package are carried by insulating films located between the confronting chips. Coils located in the package create a bias magnetic field which is common to all chips. The coils for driving bubbles along the patterns are also common to all chips.