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US Patent: 17,823
Mode of cutting tenons by two circular saws oblique to the shaft
Patentee:
William H. Harrison (exact or similar names) - Philadelphia, PA

USPTO Classifications:
144/238, 144/90.1

Tool Categories:
woodworking machines : joint making machines : tenoning machines

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Samuel L. C. Welsh
Theodore Bergner

Patent Dates:
Granted: Jul. 14, 1857

Patent Pictures:
USPTO (New site tip)
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