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For the Inventor, By the Inventor

Tyne and Wear, United Kingdom

Wilkinson & Simpson Ltd


USPTO Granted Patents = 1

Trademarks = 1

Forward Citations = 5

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1 inventor (with patents filed for the assignee):

goldMedal Colin E Marks (1 out of 5 patents)


1 patent:

1. 4775513 - Water treatment and soil testing (1988-10-04),
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USPTO Data Jan 1 1976 - Sep 29 2026

1 Patents

#13 in Tyne & Wear

#9,869 in United Kingdom

Tyne and Wear, GB
Tyne and Wear, United Kingdom

Wilkinson & Simpson Ltd

Forward Citations = 5

1 inventor:

goldMedal Colin E Marks (1 out of 5 patents)

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