Switching exchange for telephone and/or data communication

- Northern Telecom Limited
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Description

FIG. 1 is a front perspective view of a switching exchange for telephone and/or data communication showing my new design;

FIG. 2 is a side elevational view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a front elevational view thereof;

FIG. 6 is a rear elevational view thereof.

Referenced Cited
U.S. Patent Documents
D197428 February 1964 Massarella
D208633 September 1967 Pascale
D279562 July 9, 1985 Wood
Other references
  • Telephony, vol. 202, Jan. 18, 1982, p. 92, Max-824 Phone System.
Patent History
Patent number: D285680
Type: Grant
Filed: Feb 14, 1984
Date of Patent: Sep 16, 1986
Assignee: Northern Telecom Limited (Montreal)
Inventor: Howard R. Cederberg (Hayward, CA)
Primary Examiner: Wallace R. Burke
Assistant Examiner: Ruth E. Takemoto
Law Firm: Schwartz, Jeffery, Schwaab, Mack, Blumenthal & Evans
Application Number: 6/580,087
Classifications
Current U.S. Class: D13/32