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For the Inventor, By the Inventor

Delavan, WI, United States of America

Superior Stainless, Inc.


USPTO Granted Patents = 2

Forward Citations = 17

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1 inventor (with patents filed for the assignee):

goldMedal Elmer S Welch (2 out of 12 patents)


2 patents:

1. 4339111 - Clean in place diaphragm valve (1982-07-13),
2. 4311164 - Valve handle retention system (1982-01-19),
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USPTO Data Jan 1 1976 - Dec 16 2025

2 Patents

#5 in Delavan, WI

#1,869 in Wisconsin

#92,554 in US

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Delavan, WI, United States of America

Superior Stainless, Inc.

Forward Citations = 17

1 inventor:

goldMedal Elmer S Welch (2 out of 12 patents)

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