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US Patent: 50,170
Improvement in machines for dressing edges of slate-frames
Patentees:
Alexander S. Shull (exact or similar names) - Martin's Creek, PA
John W. Sayre (exact or similar names) - Martin's Creek, PA

USPTO Classifications:
144/134.1, 144/135, 144/241

Tool Categories:
woodworking machines : specialty woodworking machines

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Elias J. M. Kiefer
Patent Dates:
Granted: Sep. 26, 1865

Reissue Information:
Reissued as RE5,322 (Mar. 11, 1873)

Patent Pictures:
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