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. 26, 1982
Filed:
Jan. 16, 1980
Applicant:
Inventor:
Yan S Lee, Plymouth, MN (US);
Assignee:
Medtronic, Inc., Minneapolis, MN (US);
Primary Examiner:
Int. Cl.
CPC ...
H02J / ; H03K / ;
U.S. Cl.
CPC ...
320 48 ; 307304 ; 340636 ;
Abstract
A CMOS inverter is used to compare pacemaker battery voltage to a referenced voltage. When the reference voltage exceeds the measured battery voltage, the inverter changes state to indicate battery depletion.