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For the Inventor, By the Inventor

Champlin, MN, United States of America

Champlin Electronics, Inc.


USPTO Granted Patents = 1

Forward Citations = 15

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1 inventor (with patents filed for the assignee):

goldMedal David J Hajicek (1 out of 12 patents)


1 patent:

1. 4935884 - Sonic pipe length detector (1990-06-19),
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USPTO Data Jan 1 1976 - Oct 6 2026

1 Patents

#2 in Champlin, MN

#3,564 in Minnesota

#136,739 in US

Champlin, MN (US)
Champlin, MN, United States of America

Champlin Electronics, Inc.

Forward Citations = 15

1 inventor:

goldMedal David J Hajicek (1 out of 12 patents)

Please report any incorrect information to [email protected]
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