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US Patent: 602,314
Changeable Implement
Patentee:
Charles J. Erickson (exact or similar names) - Salt Lake City, UT

USPTO Classifications:
33/27.02, 33/473

Tool Categories:
layout tools : bevels
layout tools : compasses

Assignees:
None

Manufacturer:
Unknown

Witnesses:
Robt. B. Harkness
Wm. Pischel
Patent Dates:
Applied: Jun. 09, 1897
Granted: Apr. 12, 1898

Patent Pictures: [ 1 | 2 | 3 ]
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Description:
One of these appeared on ebay. Seems to be part bevel, part compass

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