Title:
Side drill with slotted guide tube
United States Patent 2500785
Inventors:
Armais, Arutunoff
Publication Date:
03/14/1950
Export Citation:
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Assignee:
Armais, Arutunoff
Primary Class:
175/78
Other Classes:
166/117.6, 175/40, 175/45, 175/99, 175/104, 175/203
International Classes:
E21B7/06; E21B7/08; E21B7/04
View Patent Images:
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US Patent References:
2252620Coring device
2136152Method and means for installing drainage conduits
1850403Mechanism for drilling angular channels
1804819Side wall drilling organization
1595922Right-angle drill
1271904N/A