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. 18, 1980
Filed:
Oct. 06, 1978
Applicant:
Inventor:
Peter F Radice, King of Prussia, PA (US);
Assignee:
Pennwalt Corporation, Philadelphia, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06K / ;
U.S. Cl.
CPC ...
3401 / ; 178 18 ; 310311 ;
Abstract
A device for verifying personal hand markings, e.g., signatures, and optionally, voice-produced sound, by comparison of electronically produced representations thereof with similar stored information wherein such representations are produced by variations of electrical energy caused by hand markings on a surface adapted to receive said markings and comprising a poled sheet of a piezoelectric-forming resin.