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. 27, 1976
Filed:
Jun. 24, 1974
Zoltan Voross, Elgin, IL (US);
Sun Electric Corporation, Chicago, IL (US);
Abstract
The automatic output zeroing apparatus includes an energy storage device and a differential operational amplifier. The energy storage device, which is connected to one input of the differential operational amplifier, is charged to a voltage representing the free air voltage generated by the exhaust emission analyzer. The other input of the differential operational amplifier receives the pollution-indicating voltage generated by the exhaust emission analyzer. The differential operational amplifier produces a modified pollution-indicating voltage, representing the difference between the generated pollution-indicating voltage and the free air voltage.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile