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:
May. 23, 1995
Filed:
Mar. 31, 1994
Applicant:
Inventor:
Paul M Evans, Union Grove, AL (US);
Assignee:
Quadrum Telecommunications, Inc., Huntsville, AL (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04M / ;
U.S. Cl.
CPC ...
379433 ; 379437 ;
Abstract
Shock prevention elements for use in a telephone paystation handset consisting of a pair of polyester dielectric elements positioned over associated transmitter and receiver units so as to block high voltage potentials resulting from application of collect and refund signals applied to the paystation from an associated telephone central office.