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Patent applications and USPTO patent grants for Zehren; James N..The latest application filed is for "cable-suspended well pumping systems".
Patent | Date |
---|---|
Cable-suspended well pumping systems Grant 4,352,394 - Zehren October 5, 1 | 1982-10-05 |
Mechanical splices in armored electrical cables and the like and method and apparatus for forming the same Grant 4,198,173 - Zehren April 15, 1 | 1980-04-15 |
Attachment of electric cable to submergible pump motor heads Grant 4,128,735 - Zehren December 5, 1 | 1978-12-05 |
Cable pulling apparatus Grant 4,051,989 - Zehren October 4, 1 | 1977-10-04 |
Storm choke apparatus for submergible pumps Grant 4,021,137 - Zehren May 3, 1 | 1977-05-03 |
Method and apparatus for flooding of oil-bearing formations by downward inter-zone pumping Grant 4,009,756 - Zehren March 1, 1 | 1977-03-01 |
Apparatus and method for underwater pump installation Grant 4,003,428 - Zehren January 18, 1 | 1977-01-18 |
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