Dual-tone multi-frequency microphone

Recording – communication – or information retrieval equipment – Video or audio transmission – recording or playback equipment – Element or attachment

Design Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

Design Patent

active

D0440560

CLAIM:
The ornamental design for a dual-tone multi-frequency microphone, as shown and described.

REFERENCES:
patent: D. 253767 (1979-12-01), Peterson
patent: D. 281419 (1985-11-01), Nagele
patent: D. 303116 (1989-08-01), Richards et al.
patent: D. 376599 (1996-12-01), Lindeman et al.
patent: D. 378820 (1997-04-01), Tokiyama et al.
patent: D. 388094 (1997-12-01), Tokiyama
patent: 2587684 (1952-03-01), Bauer

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Dual-tone multi-frequency microphone does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Dual-tone multi-frequency microphone, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dual-tone multi-frequency microphone will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-2458898

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.