loadpatents
Patent applications and USPTO patent grants for Woolslayer; Homer J..The latest application filed is for "method and apparatus for raising and lowering a telescoping mast".
Patent | Date |
---|---|
Method and apparatus for raising and lowering a telescoping mast Grant 4,598,509 - Woolslayer , et al. July 8, 1 | 1986-07-08 |
Method and apparatus for erecting a drilling rig mast Grant 4,587,778 - Woolslayer , et al. May 13, 1 | 1986-05-13 |
Pipe rack with pivoted fingers Grant 3,978,994 - Woolslayer , et al. September 7, 1 | 1976-09-07 |
Pipe racker Grant 3,887,086 - Woolslayer , et al. June 3, 1 | 1975-06-03 |
Detachable Pipe Guides For Pipe Racking Fingers Grant 3,815,757 - Woolslayer June 11, 1 | 1974-06-11 |
Method Of Handling Drill Pipe Grant 3,716,155 - Woolslayer , et al. February 13, 1 | 1973-02-13 |
Horizontally Moving Pipe Rack Grant 3,701,435 - Woolslayer , et al. October 31, 1 | 1972-10-31 |
Apparatus For Moving Drill Pipe Into And Out Of An Oil Well Derrick Grant 3,633,771 - Woolslayer , et al. January 11, 1 | 1972-01-11 |
Method And Apparatus For Handling Drill Pipe Grant 3,613,905 - Woolslayer , et al. October 19, 1 | 1971-10-19 |
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