Wilmington, DE, United States of America

Columbia Gas Service Corporation


USPTO Granted Patents = 2

Forward Citations = 13

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5 inventors (with patents filed for the assignee):

goldMedal Stephen E Petty (1 out of 9 patents)

silverMedal F Bert Cook (1 out of 13 patents)

bronzeMedal Arthur C Eberle (1 out of 1 patent)

4 William D Munk (1 out of 1 patent)

5 Robert G Venendaal (1 out of 1 patent)


2 patents:

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USPTO Data Jan 1 1976 - Dec 9 2025

2 Patents

#867 in Wilmington, DE

#1,268 in Delaware

#92,600 in US

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Wilmington, DE, United States of America
Forward Citations = 13

5 inventors:

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