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US Patent: 1,272,589
Ball Bearing Jack
Patentee:
William A. Whitney (exact or similar names) - Oregon, Ogle County,, IL

USPTO Classifications:
254/98, 411/326, 411/945, 74/424.77

Tool Categories:
material handling : jack screws

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown
Patent Dates:
Applied: Aug. 21, 1917
Granted: Jul. 16, 1918

Patent Pictures:
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