TREA

Telephone key expansion unit

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Information

  • Patent Grant
  • D374674
  • Patent Number
    D374,674
  • Date Filed
    Friday, June 2, 1995
    30 years ago
  • Date Issued
    Tuesday, October 15, 1996
    29 years ago
Information
Abstract
Description
Claims
  • The ornamental design for a telephone key expansion unit, as shown and described.
US Referenced Citations (10)
Number Name Date Kind
D306027 Gagnon Feb 1990
D306859 Helstab et al. Mar 1990
D311918 Renard Nov 1990
D312461 Ando Nov 1990
D317920 Fuqua et al. Jul 1991
D319235 Sato Aug 1991
D340057 Wetzel et al. Oct 1993
D346385 Wetzel et al. Apr 1994
4790007 Richter et al. Dec 1988
5373556 Johnson Dec 1994
Non-Patent Literature Citations (1)
Entry
B. A. Pargh, 1992 Spring/Summer Catalog, Panasonic 6X16 Electronic Modular Switching System, p. 330, 2nd Article from top at far right.