04740168 is referenced by 27 patents and cites 4 patents.

A device for providing security and environmental protection to an individual telephone subscribed pair having an appearance at a building entrance terminal. The device prevents unauthorized removal of an R.J. 11 plug, and selectively closes the opening leading to a corresponding R.J. 11 jack. In one embodiment, a sliding door is fixed upon a mounting plate and is secured in position by a simple tumbler type lock. In another embodiment, the lock itself includes integrally formed flanges that perform the same function as the sliding plate. In still another embodiment, the plate is substituted by a small padlock hasp.

Title
Locking device for telephone subscriber plugs
Application Number
7/56236
Publication Number
4740168
Application Date
June 1, 1987
Publication Date
April 26, 1988
Inventor
Paul V DeLuca
Plandome Manor
NY, US
Robert Leary
San Ramon
CA, US
William V Carney
Oyster Bay
NY, US
Agent
Charles E Temko
Assignee
Porta Systems
NY, US
IPC
H01R 13/44
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