USD376599SExpiredUtility

Dual-tone multi-frequency microphone

69
Assignee: MOTOROLA INCPriority: May 25, 1995Filed: May 25, 1995Granted: Dec 17, 1996
Est. expiryMay 25, 2015(expired)· nominal 20-yr term from priority
Inventors:Phillip E. LindemanJohn F. St. Pierre
69
PatentIndex Score
19
Cited by
5
References
1
Claims

Claims

exact text as granted — not AI-modified
The ornamental design for a dual-tone multi-frequency microphone, as shown and described.

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