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Houston, TX, United States of America

William L Shepherd

USPTO Granted Patents = 6

Average Co-Inventor Count = 1.1

ph-index = 4

Forward Citations = 38(Granted Patents)

Location History:

West University Place, TX (US) (1979)
West University, TX (US) (1981)
Houston, TX (US) (1976 - 2001)
Montgomery, TX (US) (2019)

Company Filing History:

Hughes Tool Company LLC

2 out of 832,812

Other

patents

Years Active: 1976-2019

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6 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 10260289 - Drilling system with drill bit for mining machine (2019-04-16),

2. 6202766 - Relief valve (2001-03-20),

3. 4451162 - Spaced button thrust surface for earth boring bit (1984-05-29),

4. 4261251 - Kelly head for hydraulic mast digger (1981-04-14),

5. 4150727 - Downcrowding device for earth boring machines (1979-04-24),

6. 3986570 - Rock bit with quick change connection (1976-10-19),

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