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US Patent: 813,095
Trammel
Patentee: John F. Hottman (exact or similar names) - Dubuque, IA USPTO Classifications: 33/27.031 Tool Categories: tool making : making handsaws layout tools : compasses : trammels Assignees: None Manufacturer: Not known to have been produced Witnesses: Louis C. Kolfenbach Robert E. Hagerty	Patent Dates: Applied: Apr. 07, 1905 Granted: Feb. 20, 1906 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Russ Allen.
Description: Adjustment/set screws on each side of the trammel point that allows precise adjustment.

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