Dual-tone multi-frequency microphone
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Description
FIG. 1 is a front, top, and right side perspective view showing our new design for a dual-tone multi-frequency microphone;
FIG. 2 is a left side elevational view thereof;
FIG. 3 is a rear elevational view thereof; and,
FIG. 4 is a bottom plan view thereof.
The broken lines in FIGS. 2-4 are for illustrative purposes only and form no part of the claimed design.
Referenced Cited
Patent History
Patent number: D376599
Type: Grant
Filed: May 25, 1995
Date of Patent: Dec 17, 1996
Assignee: Motorola, Inc. (Schaumburg, IL)
Inventors: Phillip E. Lindeman (Gurnee, IL), John F. St. Pierre (West Dundee, IL)
Primary Examiner: Sandra L. Morris
Assistant Examiner: Nanda Bondade
Attorney: Daniel C. Crilly
Application Number: 0/39,531
Type: Grant
Filed: May 25, 1995
Date of Patent: Dec 17, 1996
Assignee: Motorola, Inc. (Schaumburg, IL)
Inventors: Phillip E. Lindeman (Gurnee, IL), John F. St. Pierre (West Dundee, IL)
Primary Examiner: Sandra L. Morris
Assistant Examiner: Nanda Bondade
Attorney: Daniel C. Crilly
Application Number: 0/39,531
Classifications
Current U.S. Class:
Microphone (D14/225)
