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US Patent: 1,440,228
Piston-ring expander and remover
Patentee:
Paul O. Mamock (exact or similar names) - Raspeburg, MD

USPTO Classifications:

Tool Categories:
trade specific : vehicle repairer : vehicle mechanic : piston and ring maintenance

Assignees:
None

Manufacturer:
ZIM Mfg. Co. - Chicago, IL

Witnesses:
Unknown
Patent Dates:
Applied: Nov. 12, 1921
Granted: Dec. 26, 1922

Patent Pictures: [ 1 | 2 ]
Patent 1,440,228 - edited drawing
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Description:
Patent number appears on a ZIM piston ring expander / remover.

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