Title:
Internal reverse taper expanding bit reamer
United States Patent 2638948
Inventors:
Lee, White George
Publication Date:
05/19/1953
Export Citation:
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Assignee:
Lee, White George
Primary Class:
82/1.4
International Classes:
B23B51/00; E01B31/24; F16B13/13; B23B51/00; E01B31/00; F16B13/00
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US Patent References:
2074605Boring tool
1690018Adjustable wrench
0915184N/A
0299991N/A