For the Inventor, By the Inventor

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Betzdorf, Germany

Amsted-siemagkette Gmbh

USPTO Granted Patents = 3

Forward Citations = 39

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5 inventors (with patents filed for the assignee):

Wolfgang Janzen (2 out of 4 patents)

Herbert Wehler (1 out of 32 patents)

Ludger Frenker-Hackfort (1 out of 2 patents)

4. Alfred Bald (1 out of 1 patent)

5. Klaus Taubert (1 out of 1 patent)

3 patents: Sort by Forward Citations

1. 4328665 - Link for steel sprocket chains (1982-05-11),

2. 4283183 - Chain wheel system (1981-08-11),

3. 3940122 - Quick acting clamping device (1976-02-24),

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USPTO Data Jan 1 1976 - Dec 9 2025

3 Patents

#6 in Sieg

#8,301 in DT

Betzdorf, Germany

Amsted-siemagkette Gmbh

Forward Citations = 39

5 inventors:

Wolfgang Janzen (2 out of 4 patents)

Herbert Wehler (1 out of 32 patents)

Ludger Frenker-Hackfort (1 out of 2 patents)

4. Alfred Bald (1 out of 1 patent)

5. Klaus Taubert (1 out of 1 patent)

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