Lake Forest, IL, United States of America

Cygnet Hill Ltd.


USPTO Granted Patents = 2


Trademarks = 1

Forward Citations = 4

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4 inventors (with patents filed for the assignee):

goldMedal Marianne Grisdale (2 out of 28 patents)

silverMedal Siarhei Murauyou (2 out of 16 patents)

bronzeMedal Sarah Yarger Kienzle (2 out of 2 patents)

4 Cliff Krapfl (2 out of 2 patents)


2 patents:

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USPTO Data Jan 1 1976 - Dec 9 2025

2 Patents

#57 in Lake Forest, IL

#4,307 in Illinois

#92,598 in US

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Lake Forest, IL, United States of America
Forward Citations = 4

4 inventors:

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