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US Patent: 1,228,210
Screw-jack
Patentee:
Isaiah E. Hindman (exact or similar names) - Bellevue, PA

USPTO Classifications:
254/103, 74/665Q, 74/89.29, 74/89.38

Tool Categories:
material handling : jacks : screw jacks

Assignees:
Duff Mfg. Co. - Pittsburgh, PA

Manufacturer:
Duff Mfg. Co. - Pittsburgh, PA

Witnesses:
George A. Young

Patent Dates:
Applied: Feb. 26, 1916
Granted: May 29, 1917

Patent Pictures:
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Report data errors or omissions to steward Jeff Joslin
Vintage Machinery entry for Duff Mfg. Co.

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