Chicago, IL, United States of America

501 Advance Transformer Company


USPTO Granted Patents = 1

Forward Citations = 18

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2 inventors (with patents filed for the assignee):

goldMedal Joseph S Droho (1 out of 17 patents)

silverMedal Robert W Wisbey (1 out of 5 patents)


1 patent:

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USPTO Data Jan 1 1976 - Dec 2 2025

1 Patents

#1,435 in Chicago, IL

#6,097 in Illinois

#133,826 in US

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Chicago, IL, United States of America
Forward Citations = 18

2 inventors:

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