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Patent applications and USPTO patent grants for Persson; Jan Edvard.The latest application filed is for "specially reinforced flexible tube pumping chamber".
Patent | Date |
---|---|
Specially reinforced flexible tube pumping chamber Grant 4,076,467 - Persson February 28, 1 | 1978-02-28 |
Drill string element handling apparatus Grant 3,986,569 - Hilding , et al. October 19, 1 | 1976-10-19 |
Device for feeding a reel along a track Grant 3,973,634 - Persson , et al. August 10, 1 | 1976-08-10 |
Method and apparatus for guiding and sealing a drill string Grant 3,965,997 - Hilding , et al. June 29, 1 | 1976-06-29 |
Plants Comprising A Combustion Engine And A Compressor Driven By Said Engine Grant 3,796,515 - Lindqvist , et al. March 12, 1 | 1974-03-12 |
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