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US Patent: 1,403,958
Clamp Hand-Screw Clamp
Patentee: Harry V. Holman (exact or similar names) - Chicago, IL USPTO Classifications: 269/220, 269/242, 269/285 Tool Categories: work holding : clamps : hand screws Assignees: None Manufacturer: Adjustable Clamp Co. - Chicago, IL Witnesses: Unknown	Patent Dates: Applied: May 09, 1921 Granted: Jan. 17, 1922 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Carl Matthews
Description: Holman characterizes this patent as an improvement on Jorgensen's Dec. 3, 1901 hand-screw patent (687836).

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