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Bad Neustadt, Germany

Preh, Elektrofeinmechanische Werke

USPTO Granted Patents = 3

Forward Citations = 56

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5 inventors (with patents filed for the assignee):

Anton Rüttiger (1 out of 6 patents)

Peter Ambros (1 out of 10 patents)

Helmut Eberwein (1 out of 2 patents)

4. Wolfgang Scherzer (1 out of 1 patent)

5. Erich Gatzke (1 out of 2 patents)

3 patents: Sort by Forward Citations

1. 4992784 - Remote control set (1991-02-12),

2. 4319217 - Printed circuit (1982-03-09),

3. 3996430 - Keyboard switch assembly having multilayer printed circuit structure (1976-12-07),

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USPTO Data Jan 1 1976 - Dec 16 2025

3 Patents

#3 in Bad Neustadt

#8,262 in Germany

Bad Neustadt, Germany

Preh, Elektrofeinmechanische Werke

Forward Citations = 56

5 inventors:

Anton Rüttiger (1 out of 6 patents)

Peter Ambros (1 out of 10 patents)

Helmut Eberwein (1 out of 2 patents)

4. Wolfgang Scherzer (1 out of 1 patent)

5. Erich Gatzke (1 out of 2 patents)

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