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US Patent: 1,560,507
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Patentee:
Albert F. Froussard (exact or similar names) - St. Louis, MO

USPTO Classifications:
451/485

Tool Categories:
metalworking machines : grinders : cylindrical grinders

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown
Patent Dates:
Applied: Nov. 05, 1923
Granted: Nov. 03, 1925

Patent Pictures:
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"Vintage Machinery" entry for Multiple Boring Machine Co.

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