Title:
Well signaling system
United States Patent 2411696

Inventors:
Daniel, Silverman
Thomas, Gilmartin
Publication Date:
11/26/1946
View Patent Images:
Download PDF 2411696 pdf       PDF help
Export Citation:
Click for automatic bibliography generation
Assignee:
STANOLIND OIL & GAS CO
Primary Class:
340/853.700
Other Classes:
324/369, 73/152.030, 175/50, 340/854.800
International Classes:
E21B47/12