Caledonia, MI, United States of America

Steffans Enterprises, Inc.


USPTO Granted Patents = 1

Forward Citations = 14

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3 inventors (with patents filed for the assignee):

goldMedal Charles J Steffens (1 out of 18 patents)

silverMedal Douglas C Steffens (1 out of 3 patents)

bronzeMedal Mark J Heintskill (1 out of 3 patents)


1 patent:

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USPTO Data Jan 1 1976 - Dec 9 2025

1 Patents

#6 in Caledonia, MI

#4,521 in Michigan

#133,893 in US

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Caledonia, MI, United States of America
Forward Citations = 14

3 inventors:

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