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For the Inventor, By the Inventor

North Andover, MA, United States of America

Watts Drainage Products Inc.


USPTO Granted Patents = 1

Forward Citations = 11

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1 inventor (with patents filed for the assignee):

goldMedal Steven P Hofmann (1 out of 7 patents)


1 patent:

1. D531697 - Vacuum breaker (2006-11-07),
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USPTO Data Jan 1 1976 - Dec 16 2025

1 Patents

#31 in North Andover, MA

#6,489 in Massachusetts

#133,964 in US

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North Andover, MA, United States of America

Watts Drainage Products Inc.

Forward Citations = 11

1 inventor:

goldMedal Steven P Hofmann (1 out of 7 patents)

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