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For the Inventor, By the Inventor

Celle, Germany

Ecoroll Ag Werkzengtechnik


USPTO Granted Patents = 1

Forward Citations = 0

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2 inventors (with patents filed for the assignee):

goldMedal Alfred Ostertag (1 out of 17 patents)

silverMedal Stefan Zenk (1 out of 1 patent)


1 patent:

1. 10549392 - Hammering device for influencing workpieces (2020-02-04),
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USPTO Data Jan 1 1976 - Dec 16 2025

1 Patents

#4 in Celle

#15,083 in Germany

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Celle, Germany

Ecoroll Ag Werkzengtechnik

Forward Citations = 0

2 inventors:

goldMedal Alfred Ostertag (1 out of 17 patents)

silverMedal Stefan Zenk (1 out of 1 patent)

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