Title:
Tool for severing and milling away a section of casing in the bore of a well
United States Patent 2709490
Inventors:
Trimble, Harry C.
Woelfel, Albert E.
Publication Date:
05/31/1955
Assignee:
A 1 BIT & TOOL COMPANY INC
Other Classes:
285/305, 409/143, 409/178
International Classes:
E21B29/00; E21B29/06; E21B29/00