DYNA MAGNETIC DEVICES INC has a total of 11 patent applications. Its first patent ever was published in 1959. It filed its patents most often in United States, Germany and United Kingdom. Its main competitors in its focus markets audio-visual technology, telecommunications and basic communication technologies are DANAVOX AS, BRUCKHOFF APPARATEBAU GMBH and SHENZHEN VOXTECH CO LTD.
# | Country | Total Patents | |
---|---|---|---|
#1 | United States | 7 | |
#2 | Germany | 2 | |
#3 | United Kingdom | 2 |
# | Industry | |
---|---|---|
#1 | Audio-visual technology | |
#2 | Telecommunications | |
#3 | Basic communication technologies | |
#4 | Optics | |
#5 | Machines |
# | Technology | |
---|---|---|
#1 | Loudspeakers and microphones | |
#2 | Unspecified technologies | |
#3 | Telephonic communication | |
#4 | Spectacles | |
#5 | Amplifiers |
# | Name | Total Patents |
---|---|---|
#1 | Sebesta G | 3 |
#2 | Hofer Alan | 2 |
#3 | Sebesta George J | 2 |
#4 | Carlisle Richard W | 2 |
#5 | Howard Fener | 1 |
#6 | Mellen A | 1 |
#7 | John Sebesta George | 1 |
#8 | Carlisle Richard Wallace | 1 |
#9 | Carlisle R | 1 |
#10 | Sebesta George John | 1 |
Publication | Filing date | Title |
---|---|---|
US4006318A | Inertial microphone system | |
US3789166A | Submersion-safe microphone | |
US3733445A | Inertial reaction transducers | |
US3723670A | Head contact microphone system | |
GB1237566A | Inertial reaction transducers | |
US3454896A | Miniature audio amplifiers | |
US3432622A | Sub-miniature sound transducers | |
US3076062A | Hearing-aid sound transducer |