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:
Oct. 24, 1989
Filed:
Aug. 05, 1988
Applicant:
Inventors:
Casimir Z Cwirzen, Arlington Heights, IL (US);
Albert Kupferschmidt, Highland Park, IL (US);
Assignee:
Northern Telecom Limited, , CA;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01R / ;
U.S. Cl.
CPC ...
439188 ; 439922 ; 361119 ;
Abstract
A plug-in module may be added to terminals on an existing telephone distribution frame. Electronic modules may be added to the plug-in modules to provide surge and lightning protection and the like. This way a distribution frame built to protect electromechanical voice signal transmission standards may be upgraded to protect electronic transmission data signal transmission capabilities, both now and in the future.
Cwirzen, Casimir. (1989). Electrically protected connector for telephone distribution frames (U.S. Patent No. 4875868). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4875868
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