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US Patent: 432,732
Lifting Jack
Patentee:
Isaac N. Groves (exact or similar names) - Montesano, Chehalis County, WA

USPTO Classifications:
254/112

Tool Categories:
industrial tools : lifting tools

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown
Patent Dates:
Applied: Apr. 21, 1890
Granted: Jul. 22, 1890

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