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:
Aug. 07, 1979
Filed:
Mar. 07, 1978
Gary L VanderSyde, Naperville, IL (US);
John Warberg, Scarborough, CA;
Alcohol Countermeasure Systems Inc., Sarnia, CA;
Abstract
A breath tester includes an electronic detector providing an information signal with an amplitude level which varies as a function of the alcohol content in the breath under test. An anomaly detector circuit stores a signal related to the peak of the information signal, and continually compares this peak value with the instantaneous value of the information signal. When the difference between the peak signal level and the instantaneous signal level exceeds a preset amount, the output display of the breath tester is modified to indicate the analysis process has been disturbed by an anomalous chemical substance.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile