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For the Inventor, By the Inventor

Washington, MO, United States of America

Ballwin-washington, Inc.


USPTO Granted Patents = 1

Forward Citations = 4

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1 inventor (with patents filed for the assignee):

goldMedal Donald E Hunt (1 out of 2 patents)


1 patent:

1. 4492210 - Serviceable valve construction (1985-01-08),
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USPTO Data Jan 1 1976 - Dec 16 2025

1 Patents

#16 in Washington, MO

#1,887 in Missouri

#133,784 in US

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Washington, MO, United States of America

Ballwin-washington, Inc.

Forward Citations = 4

1 inventor:

goldMedal Donald E Hunt (1 out of 2 patents)

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