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For the Inventor, By the Inventor

Watertown, SD, United States of America

Pcps Limited Partnership


USPTO Granted Patents = 2

% Expired Patents = 50.0

Forward Citations = 5

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3 inventors (with patents filed for the assignee):

goldMedal Edward L Schwarz (2 out of 32 patents)

silverMedal Terrence P Duggins (2 out of 2 patents)

bronzeMedal Robert L Hughes (2 out of 2 patents)


2 patents:

1. 6925916 - Two stage punch press actuator with output drive shaft position sensing (2005-08-09),
2. 6418824 - Two stage punch press actuator with output drive shaft position sensing (2002-07-16),
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USPTO Data Jan 1 1976 - Sep 29 2026

2 Patents

#7 in Watertown, SD

#148 in South Dakota

#94,730 in US

Watertown, SD (US)
Watertown, SD, United States of America

Pcps Limited Partnership

Forward Citations = 5

3 inventors:

goldMedal Edward L Schwarz (2 out of 32 patents)

silverMedal Terrence P Duggins (2 out of 2 patents)

bronzeMedal Robert L Hughes (2 out of 2 patents)

Please report any incorrect information to [email protected]
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