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:
Dec. 02, 1986
Filed:
Jul. 25, 1985
Applicant:
Inventor:
Thomas Mazz, Huntington Station, NY (US);
Assignee:
Porta Systems Corp., Syosset, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04B / ; H03K / ;
U.S. Cl.
CPC ...
379 29 ; 3072 / ;
Abstract
An improved and simplified voltage sensitive switching unit for opening a telephone subscriber pair at the line of demarcation for purposes of conducting line tests of the pair from the telephone central office to determine the state of the line. Relatively complex prior art circuitry is replaced by a combination of inexpensive solid state devices which eliminates the need for a prior art combination of diode bridge and transistor switching network.
Mazz, Thomas. (1986). Maintenance termination unit (U.S. Patent No. 4626632). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4626632
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile