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US Patent: 47,436
Improvement in Gear Cutting Rules
Patentee: C. B. Long (exact or similar names) - Worcester, MA USPTO Classifications: 33/494 Tool Categories: rules rules : rule graduations Assignees: None Manufacturer: E.A Stearns & Co. - Brattleboro, VT The Stanley Rule & Level Co. - New Britain, CT Witnesses: Thos. H. Dodge J. Henry Hill	Patent Dates: Granted: Apr. 25, 1865 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Russ Allen.
Description: Special markings which allows the number of cogs of a given pitch to be cut on a specified diameter wheel.

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