Digital electronic branch exchange unit

- Kabushiki Kaisha Toshiba
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Description

FIG. 1 is a top front right side perspective view of a digital electronic branch exchange unit showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a right side elevational view thereof, a left side elevational view being a mirror image of the right;

FIG. 5 is a rear elevational view thereof; and

FIG. 6 is a bottom plan view thereof.

Referenced Cited
U.S. Patent Documents
D236007 July 1975 Davis, Jr. et al.
D284187 June 10, 1986 Brown et al.
D289521 April 28, 1987 Macowski et al.
D294028 February 2, 1988 Duell et al.
D297837 September 27, 1988 Shibuya et al.
D299455 January 17, 1989 Pushelberg et al.
D307752 May 8, 1990 Yoshida et al.
Foreign Patent Documents
758798 March 1989 JPX
Other references
  • APEX2400 Series; NEC Technical Report, vol. 41, No. 11/1988. NEC Catalog of APEX2400IMS--undated.
Patent History
Patent number: D324050
Type: Grant
Filed: Feb 20, 1990
Date of Patent: Feb 18, 1992
Assignee: Kabushiki Kaisha Toshiba (Kawasaki)
Inventor: Takaharu Ando (Ryugasaki)
Primary Examiner: Wallace R. Burke
Assistant Examiner: Freda S. Nunn
Law Firm: Oblon, Spivak, McClelland, Maier & Neustadt
Application Number: 7/482,668
Classifications
Current U.S. Class: Telephone Equipment (D14/240); D14/107