USD464644SExpiredUtility

Telephone exchange equipment

71
Assignee: HITACHI LTDPriority: Feb 21, 2001Filed: Feb 21, 2001Granted: Oct 22, 2002
Est. expiryFeb 21, 2021(expired)· nominal 20-yr term from priority
Inventors:Takashi OhwadaHiroshi YoshikawaToshihiko Umeda
71
PatentIndex Score
18
Cited by
21
References
1
Claims

Claims

exact text as granted — not AI-modified
The ornamental design for a telephone exchange equipment, as shown.

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