loadpatents
Patent applications and USPTO patent grants for Perkins; Lee E..The latest application filed is for "well casing connection".
Patent | Date |
---|---|
Well casing connection Grant 4,762,344 - Perkins , et al. August 9, 1 | 1988-08-09 |
Fluid retarded accelerating jar with negative and positive pressure chambers Grant 4,200,158 - Perkins April 29, 1 | 1980-04-29 |
Hydraulic jarring device Grant 4,111,271 - Perkins September 5, 1 | 1978-09-05 |
Apparatus and method for controlling the flow of fluids from a well bore Grant 4,044,834 - Perkins August 30, 1 | 1977-08-30 |
Apparatus and method for gravel packing a well Grant 4,018,284 - Perkins April 19, 1 | 1977-04-19 |
Retrievable Packer Apparatus For Use In A Well Bore And Method Of Prolonging Its Operating Life Grant 3,584,684 - Anderson , et al. June 15, 1 | 1971-06-15 |
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