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For the Inventor, By the Inventor

Ozark, MI, United States of America

Sls International, Inc.


USPTO Granted Patents = 3

Forward Citations = 51

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1 inventor (with patents filed for the assignee):

goldMedal Joel A Butler (3 out of 22 patents)


3 patents:

1. 8199918 - Loudspeaker protection circuit (2012-06-12),
2. 7301490 - Sigma-delta modulated power supply (2007-11-27),
3. 7084799 - Sigma-delta modulated amplifier (2006-08-01),
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USPTO Data Jan 1 1976 - Dec 30 2025

3 Patents

#1 in Ozark, MI

#2,448 in Michigan

#72,042 in US

...
Ozark, MI, United States of America

Sls International, Inc.

Forward Citations = 51

1 inventor:

goldMedal Joel A Butler (3 out of 22 patents)

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