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For the Inventor, By the Inventor

Houma, LA, United States of America

Directional Wireline Services, Inc.


USPTO Granted Patents = 1

Forward Citations = 8

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1 inventor (with patents filed for the assignee):

goldMedal Donald V Umphries (1 out of 4 patents)


1 patent:

1. 5295544 - Decentralized casing hole puncher (1994-03-22),
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USPTO Data Jan 1 1976 - Dec 16 2025

1 Patents

#27 in Houma, LA

#685 in Louisiana

#133,784 in US

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Houma, LA, United States of America

Directional Wireline Services, Inc.

Forward Citations = 8

1 inventor:

goldMedal Donald V Umphries (1 out of 4 patents)

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