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For the Inventor, By the Inventor

Chagrin Falls, OH, United States of America

Malcolm Mann, Inc.


USPTO Granted Patents = 3

Forward Citations = 124

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1 inventor (with patents filed for the assignee):

goldMedal Mark Knapp (3 out of 35 patents)


3 patents:

1. 6550775 - Annular gasket (2003-04-22),
2. 6367802 - Annular gasket with locking structure (2002-04-09),
3. 6336640 - Gasket (2002-01-08),
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USPTO Data Jan 1 1976 - Jan 13 2026

3 Patents

#22 in Chagrin Falls, OH

#2,790 in Ohio

#72,125 in US

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Chagrin Falls, OH, United States of America

Malcolm Mann, Inc.

Forward Citations = 124

1 inventor:

goldMedal Mark Knapp (3 out of 35 patents)

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