For the Inventor, By the Inventor

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Canby, OR, United States of America

Sprague Controls, Inc.

USPTO Granted Patents = 2

Trademarks = 1

Forward Citations = 66

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4 inventors (with patents filed for the assignee):

Dennis R Partlow (1 out of 2 patents)

Wayne L Mann (1 out of 3 patents)

Mark W DeWitt (1 out of 1 patent)

4. Norman J Petersen (1 out of 1 patent)

2 patents: Sort by Forward Citations

1. 5796344 - Imminent icing condition enunciator (1998-08-18),

2. 5657929 - Air-liquid system for cleaning vehicle headlight lens and similar (1997-08-19),

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USPTO Data Jan 1 1976 - Dec 16 2025

2 Patents

#8 in Canby, OR

#1,086 in Oregon

#92,555 in US

Canby, OR, United States of America

Sprague Controls, Inc.

Forward Citations = 66

4 inventors:

Dennis R Partlow (1 out of 2 patents)

Wayne L Mann (1 out of 3 patents)

Mark W DeWitt (1 out of 1 patent)

4. Norman J Petersen (1 out of 1 patent)

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