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US Patent: 74,749
Improvement in mode of attaching circular saws to their mandrels
Patentee:
Ela Calley (exact or similar names) - Franklin, NH

USPTO Classifications:
83/666

Tool Categories:
woodworking machines : circular saws

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
F. P. Hale, Jr.
R. H. Eddy
Patent Dates:
Granted: Feb. 25, 1868

Patent Pictures:
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