Title:
Portable oil well mast with folding gin pole
United States Patent 2787344


Inventors:
Woolslayer, Homer J.
Turner, Calvin L.
Campbell, Erwin A.
Application Number:
US40931154A
Publication Date:
04/02/1957
Filing Date:
02/10/1954
Assignee:
MOORE CORP LEE C
Primary Class:
Other Classes:
52/120
International Classes:
E04H12/18; E21B15/00
View Patent Images:
US Patent References:
2664976Portable well servicing equipment1954-01-05
2503604Mast structure1950-04-11
Foreign References:
GB583919A1947-01-02