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Patent applications and USPTO patent grants for Van Wormer; Richard A..The latest application filed is for "well cementing valve".
Patent | Date |
---|---|
Well cementing valve Grant 4,602,684 - Van Wormer , et al. July 29, 1 | 1986-07-29 |
Equipment insert and method Grant 4,600,058 - Van Wormer , et al. July 15, 1 | 1986-07-15 |
Pipe Racking Apparatus Grant 3,844,420 - Walling , et al. October 29, 1 | 1974-10-29 |
Control For Well Pipe Racks And The Like Grant 3,768,663 - Turner, Jr. , et al. October 30, 1 | 1973-10-30 |
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