US Patent: RE2,576
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Improvement in braces for bits
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Patentee:
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Nelson Spofford (exact or similar names) - Haverhill, MA |
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Patent Dates:
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Granted: |
Apr. 23, 1867 |
Reissue Information: |
Reissue of 25,984 (Nov. 01, 1859) |
Reissued as RE8,215 (May 07, 1878) |
Patent Pictures:
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Kirk Eppler
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Description: |
Extended twice. (April 23, 1867 as RE2,576 & November 1, 1873 as RE8,215 |
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