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For the Inventor, By the Inventor

Homa, LA, United States of America

Directional Wireline Service, Inc.


USPTO Granted Patents = 1

Forward Citations = 11

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1 inventor (with patents filed for the assignee):

goldMedal Donald V Umphries (1 out of 4 patents)


1 patent:

1. 5111885 - Decentralized casing hole puncher (1992-05-12),
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USPTO Data Jan 1 1976 - Dec 16 2025

1 Patents

#1 in Homa, LA

#5,183 in Louisiana

#133,964 in US

...
Homa, LA, United States of America

Directional Wireline Service, Inc.

Forward Citations = 11

1 inventor:

goldMedal Donald V Umphries (1 out of 4 patents)

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