Title:
Drilling rig
United States Patent 3012619


Inventors:
Farque, Carl C.
Application Number:
US78516559A
Publication Date:
12/12/1961
Filing Date:
01/06/1959
Assignee:
Olive, Petty S.
Primary Class:
Other Classes:
173/28, 173/145, 173/147
International Classes:
E21B7/02; E21B19/084
View Patent Images:
US Patent References:
2792198Portable drill rig1957-05-14
2754085Portable shot hole drill1956-07-10
2673712Portable hole digger1954-03-30
2643858Soil sampling machine1953-06-30
2622847Apparatus for operating excavating tools1952-12-23
2509410Earth boring machine1950-05-30
2334312Drilling machine1943-11-16
0417352N/A1889-12-17