Well bore electrical generator
United States Patent 2940039
US Patent References:
Electrical surveying
- - 2364957

Flowmeter
- - 2728893


Inventors:
Lloyd, Yost
Wilson, William R.
Mccreary, Raymond A.
Publication Date:
06/07/1960
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Assignee:
SMITH CORP A O
CALIFORNIA RESEARCH CORP
Primary Class:
324/174
Other Classes:
324/323, 175/107, 340/854.500, 310/156.310, 310/87, 175/40
International Classes:
E21B41/00; E21B47/12