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US Patent: 1,533,168
Lifting Jack
Patentee:
Irwin E. Dearsley (exact or similar names) - Racine, WI

USPTO Classifications:
254/102

Tool Categories:
material handling : jacks : vehicle jacks : automobile and truck jacks

Assignees:
Walker Mfg. Co. (Racine) - Racine, WI

Manufacturer:
Not known to have been produced

Witnesses:
Unknown

Patent Dates:
Applied: Aug. 14, 1924
Granted: Apr. 14, 1925

Reissue Information:
Reissued as RE17,050 (Jul. 24, 1928)

Patent Pictures:
Patent 1,533,168 - edited from PATENT GAZETTE.
USPTO (New site tip)
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Report data errors or omissions to steward Stan Schulz
Description:
"Double screw" compact jack for automobiles; the claims deal with the means to have the outer screw fully extend before the inner screw operates. The reissue number [RE17,050] appears along with 1,734,831 and other numbers on a "MADE IN U.S.A." example -- see that entry for photo of the jack.

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