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For the Inventor, By the Inventor

Traboch, Austria

4a Manufacturing Gmbh


USPTO Granted Patents = 4


Trademarks = 1

Forward Citations = 6

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4 inventors (with patents filed for the assignee):

goldMedal Reinhard Hafellner (4 out of 21 patents)

silverMedal Michael Pichler (4 out of 5 patents)

bronzeMedal Domenica Foglia (2 out of 2 patents)

4.  Domenico Foglia (1 out of 1 patent)


4 patents:

1. 12479575 - Integrated frame structure (2025-11-25),
2. 11039252 - Membrane plate structure for generating sound waves (2021-06-15),
3. 10034093 - Temperature stable membrane plate structure for a loudspeaker (2018-07-24),
4. 10028060 - Temperature stable membrane plate structure for a loudspeaker (2018-07-17),
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USPTO Data Jan 1 1976 - Dec 16 2025

4 Patents

#2 in Traboch

#593 in Austria

...
Traboch, Austria

4a Manufacturing Gmbh

Forward Citations = 6

4 inventors:

goldMedal Reinhard Hafellner (4 out of 21 patents)

silverMedal Michael Pichler (4 out of 5 patents)

bronzeMedal Domenica Foglia (2 out of 2 patents)

4.  Domenico Foglia (1 out of 1 patent)

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