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US Patent: 447,642
Trammel Head
Patentee:
Reinhold G. Hausdörfer (exact or similar names) - Zanesville, OH

USPTO Classifications:
33/27.031

Tool Categories:
layout tools : compasses : trammels

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Joseph Scholl
D. B. Linn
Patent Dates:
Applied: Sep. 18, 1890
Granted: Mar. 03, 1891

Patent Pictures:
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