For the Inventor, By the Inventor

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Lorain, OH, United States of America

Precision Pneumatics, LLC

USPTO Granted Patents = 2

Forward Citations = 2

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4 inventors (with patents filed for the assignee):

Hugh F Groth (2 out of 20 patents)

William C Stumphauzer (1 out of 22 patents)

William S Stumphauzer (1 out of 1 patent)

4. Leonard R Nemeth (1 out of 1 patent)

2 patents: Sort by Forward Citations

1. 5687754 - Automatic drain valve with internal pressure booster valve (1997-11-18),

2. 5417237 - Automatic drain valve (1995-05-23),

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USPTO Data Jan 1 1976 - Jan 6 2026

2 Patents

#14 in Lorain, OH

#3,555 in Ohio

#92,697 in US

Lorain, OH, United States of America

Precision Pneumatics, LLC

Forward Citations = 2

4 inventors:

Hugh F Groth (2 out of 20 patents)

William C Stumphauzer (1 out of 22 patents)

William S Stumphauzer (1 out of 1 patent)

4. Leonard R Nemeth (1 out of 1 patent)

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