Title:
Internal reverse taper expanding bit reamer
United States Patent 2638948
US Patent References:
/0299991.html
- - 0299991

/0915184.html
- - 0915184

Adjustable wrench
- - 1690018

Boring tool
- - 2074605


Inventors:
Lee, White George
Publication Date:
05/19/1953
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Assignee:
Lee, White George
Primary Class:
82/1.400
International Classes:
F16B13/13