Optical transmission equipment

- Hitachi, Ltd.
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Description

FIG. 1 is a front and left side perspective view of an optical transmission equipment showing our new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a right side elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a rear elevational view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

Referenced Cited
U.S. Patent Documents
D196115 August 1963 Berry, Jr.
D236007 July 1975 Davis, Jr.
D245158 July 26, 1977 Davis, Jr.
D279562 July 9, 1985 Wood
D315146 March 5, 1991 Horie
D325584 April 21, 1992 Ando
D345549 March 29, 1994 Guber et al.
D348655 July 12, 1994 Bock et al.
D361073 August 8, 1995 Walters et al.
D372464 August 6, 1996 Wetzel
5129030 July 7, 1992 Petrunia
Other references
  • Telephony Jul. 13, 1992, pp. 22 and 23, DSC Communications Corp. Advertisement. Telephony Oct. 26, 1992, p. 49, Anadigicom Advertisement. NEC Catalog of Apex 2400 IMS.
Patent History
Patent number: D396234
Type: Grant
Filed: Feb 13, 1996
Date of Patent: Jul 21, 1998
Assignee: Hitachi, Ltd. (Tokyo)
Inventors: Tadahiro Yamaguchi (Fuchu), Hiroaki Nakashima (Tokyo), Hiroshi Kuwaki (Fujisawa), Osamu Matsubara (Yokohama), Yoshihiro Yano (Yokohama)
Primary Examiner: Jeffrey Asch
Law Firm: Antonelli, Terry, Stout & Kraus, LLP
Application Number: 0/50,276
Classifications
Current U.S. Class: Telephone Equipment (D14/240); Casing Or Enclosure Not Elsewhere Specified (D13/184); D14/102
International Classification: 1403;