USD374674SExpiredUtility

Telephone key expansion unit

73
Assignee: SIEMENS ROLM COMMUNICATIONS INCPriority: Jun 2, 1995Filed: Jun 2, 1995Granted: Oct 15, 1996
Est. expiryJun 2, 2015(expired)· nominal 20-yr term from priority
Inventors:Erich C. ElkinsWayne E. MckinnonDavid E. BryantMary E. KingsburyDoug A. ErwinWilliam Mcright
73
PatentIndex Score
19
Cited by
11
References
1
Claims

Claims

exact text as granted — not AI-modified
The ornamental design for a telephone key expansion unit, as shown and described.

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