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For the Inventor, By the Inventor

Fort Worth, TX, United States of America

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USPTO Granted Patents = 2

Forward Citations = 144

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2 inventors (with patents filed for the assignee):

goldMedal Walter J Stiles (2 out of 5 patents)

silverMedal Winfield W Salisbury (2 out of 19 patents)


2 patents:

1. 4282940 - Apparatus for perforating oil and gas wells (1981-08-11),
2. 4199034 - Method and apparatus for perforating oil and gas wells (1980-04-22),
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USPTO Data Jan 1 1976 - Sep 29 2026

2 Patents

#251 in Fort Worth, TX

#6,293 in Texas

#94,730 in US

Fort Worth, TX (US)
Fort Worth, TX, United States of America

Magnafrac

Forward Citations = 144

2 inventors:

goldMedal Walter J Stiles (2 out of 5 patents)

silverMedal Winfield W Salisbury (2 out of 19 patents)

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