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For the Inventor, By the Inventor

Zwanenburg, Netherlands

Ahrend-cirkel B.v.


USPTO Granted Patents = 1

Forward Citations = 16

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1 inventor (with patents filed for the assignee):

goldMedal Eckhard Hansen (1 out of 4 patents)


1 patent:

1. 4804227 - Point-synchronized adjustment device for office chairs (1989-02-14),
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USPTO Data Jan 1 1976 - Dec 9 2025

1 Patents

#6 in Zwanenburg

#3,291 in Netherlands

...
Zwanenburg, Netherlands

Ahrend-cirkel B.v.

Forward Citations = 16

1 inventor:

goldMedal Eckhard Hansen (1 out of 4 patents)

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