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US Patent: 186,814
Handsaw Butcher's Saw
Patentee: Charles Disston (exact or similar names) - Philadelphia, PA USPTO Classifications: 30/507, 30/518 Tool Categories: specialty tools : special purpose saws : meat saws woodworking tools : handsaws : saw handles Assignees: None Manufacturer: Unknown Witnesses: Hermann Moessner Harry Smith	Patent Dates: Applied: Dec. 07, 1876 Granted: Jan. 30, 1877 Patent Pictures: [ 1 | 2 ] USPTO (New site tip) Google Patents Report data errors or omissions to steward Russ Allen.
Description: Patented method to attach blade and frame to the handle. "T" shape frame slides into corresponding opening in the handle. An unmarked example has been seen.

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