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US Patent: 1,416,011
Piston Ring
Patentee:
Albert F. Froussard (exact or similar names) - St. Louis, MO

USPTO Classifications:
277/474

Tool Categories:
propulsion and energy : steam engines : steam engine pistons : piston ring and packing

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown
Patent Dates:
Applied: May 01, 1919
Granted: May 16, 1922

Patent Pictures:
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