USD254141SExpiredUtility

Telephone call cost determining device

11
Assignee: UTILITY VERIFICATION CORPPriority: Mar 20, 1978Filed: Mar 20, 1978Granted: Feb 5, 1980
Est. expiryMar 20, 1998(expired)· nominal 20-yr term from priority
Inventors:Robert J. De Masi
11
PatentIndex Score
0
Cited by
2
References
1
Claims

Claims

exact text as granted — not AI-modified
The ornamental design for a telephone call cost determining device, substantially as shown and described.

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