US Patent: 10,872
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Expansion-bit
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Patentee:
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Asa Weeks (exact or similar names) - South Boston, MA |
Manufacturer: |
D. Adams - Unknown, Unknown |
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Patent Dates:
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Granted: |
May 02, 1854 |
USPTO (New site tip) Google Patents
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Jeff Joslin
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Description: |
Correspondent Chris Berger reported an example of this bit: "There is a mark 'D. ADAMS' in a small arched logo (no location) on one of the flats of the shank. I did not find 'D. ADAMS' in DAT or any other source." |
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