Title:
Well bore electrical generator
United States Patent 2940039
Inventors:
Lloyd, Yost
Wilson, William R.
Mccreary, Raymond A.
Application Number:
US66469857A
Publication Date:
06/07/1960
Filing Date:
06/10/1957
Assignee:
SMITH CORP A O
CALIFORNIA RESEARCH CORP
Primary Class:
Other Classes:
175/40, 175/107, 310/87, 310/156.31, 324/323, 340/854.5
International Classes:
E21B41/00; E21B47/12
View Patent Images:
US Patent References:
2728893Flowmeter1955-12-27
2364957Electrical surveying1944-12-12