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US Patent: 215,898
Improvement in mills for sawing shingle-bolts
Patentee:
John Du Bois (exact or similar names) - Williamsport, PA

USPTO Classifications:
83/417, 83/421

Tool Categories:
woodworking machines : specialty woodworking machines : shingle machines

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown

Patent Dates:
Applied: Mar. 15, 1879
Granted: May 27, 1879

Patent Pictures:
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