US Patent: 1,253,553 - Apparatus for smoothing and calibrating tapered and curved hollow metal bodies, such as bows for wind instruments


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US Patent: 1,253,553

Apparatus for smoothing and calibrating tapered and curved hollow metal bodies, such as bows for wind instruments

Patentee:

Benjamin F. Winterhoff (exact or similar names) - Elkhart, IN

USPTO Classifications:

Tool Categories:

Assignees:

None

Manufacturer:

Not known to have been produced

Witnesses:

Unknown

Patent Pictures: