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For the Inventor, By the Inventor

Petaluma, CA, United States of America

Sonoma Technology, Inc.


USPTO Granted Patents = 2

Trademarks = 4

Forward Citations = 12

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2 inventors (with patents filed for the assignee):

goldMedal Martin Patrick Buhr (1 out of 1 patent)

silverMedal L Willard Richards (1 out of 2 patents)


2 patents:

1. 7238328 - Solid-state light source photolytic nitrogen dioxide converter (2007-07-03),
2. 4921349 - Photographic method for monitoring visibility through measurement of (1990-05-01),
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USPTO Data Jan 1 1976 - Dec 23 2025

2 Patents

#61 in Petaluma, CA

#20,538 in California

#92,558 in US

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Petaluma, CA, United States of America

Sonoma Technology, Inc.

Forward Citations = 12

2 inventors:

goldMedal Martin Patrick Buhr (1 out of 1 patent)

silverMedal L Willard Richards (1 out of 2 patents)

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