TREA

Add-on module for a homogeneous unit telephone set

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Information

  • Patent Grant
  • D306859
  • Patent Number
    D306,859
  • Date Filed
    Friday, January 6, 1989
    35 years ago
  • Date Issued
    Tuesday, March 27, 1990
    34 years ago
Information
Abstract
Description
Claims
  • The ornamental design for an add-on module for a homogeneous unit telephone set, as shown and described.
US Referenced Citations (11)
Number Name Date Kind
D219383 Fox et al. Dec 1970
D232226 Bee et al. Jul 1974
D236501 Conway et al. Aug 1975
D251296 Haas Mar 1979
D276156 Goodin et al. Oct 1984
D287723 Kido Jan 1987
D293319 Matsuada et al. Dec 1987
D297535 Gagnon Sep 1988
D300028 To Feb 1989
D300029 Kido et al. Feb 1989
4773090 Goatman Sep 1988
Foreign Referenced Citations (1)
Number Date Country
0129949 Jun 1986 JPX
Non-Patent Literature Citations (4)
Entry
Teleconnect Guide .COPYRGT.1985: Telecom System, p. 24; TIE/Comm. at p. 25; Items #76, #78; & #79.
GTE Supply: Customer Premise Eqt.: Northern Telecom, Unity 20-Button Expansion Module at p. 59.
Telephony, 9-10-82 Northern Telecom Logic System.
CMC Brochure: Corporate Message Center Equip.: 5 Basic Components.