USD259786SExpiredUtility

Conferencing telephone unit

84
Assignee: NORTHERN TELECOM LTDPriority: Oct 3, 1978Filed: Oct 3, 1978Granted: Jul 7, 1981
Est. expiryOct 3, 1998(expired)· nominal 20-yr term from priority
Inventors:Fred D. LeesonHenry A. MainClifford D. Read
84
PatentIndex Score
23
Cited by
4
References
1
Claims

Claims

exact text as granted — not AI-modified
The ornamental design for a conferencing telephone unit, substantially as shown.

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