For the Inventor, By the Inventor

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Eppingen, Germany

Maschinenfabrik J. Dieffenbacher

USPTO Granted Patents = 3

Forward Citations = 28

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4 inventors (with patents filed for the assignee):

Friedrich B Bielfeldt (2 out of 59 patents)

Richard Brussel (1 out of 17 patents)

Werner Hoffmann (1 out of 3 patents)

4. Heinrich Pfeiffer (1 out of 7 patents)

3 patents: Sort by Forward Citations

1. 6290809 - Apparatus for the production of boards of wood-based material (2001-09-18),

2. 4611983 - Injection press for use in a transfer molding system (1986-09-16),

3. 4151906 - Installation for the production of layered pressed panels and decorative (1979-05-01),

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USPTO Data Jan 1 1976 - Dec 16 2025

3 Patents

#6 in Eppingen

#8,278 in Germany

Eppingen, Germany

Maschinenfabrik J. Dieffenbacher

Forward Citations = 28

4 inventors:

Friedrich B Bielfeldt (2 out of 59 patents)

Richard Brussel (1 out of 17 patents)

Werner Hoffmann (1 out of 3 patents)

4. Heinrich Pfeiffer (1 out of 7 patents)

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