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Phillip Hardcastle

Houston, TX: #8,651 of 21,073 inventorsTop 45%
Texas: #52,441 of 125,132 inventorsTop 45%
Overall (All Time): #2,371,824 of 4,157,543Top 60%
2 Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
4306742 Pipe hanger — 1981-12-22
4291889 Seal for wellheads — 1981-09-29

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