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US Patent: 711,169
Ratchet screw-driver
Patentee: Adolph Delphis Leblanc (exact or similar names) - Montreal, QC Canada USPTO Classifications: 74/127 Tool Categories: screwdrivers : screwdriver mechanisms : spiral screwdrivers Assignees: None Manufacturer: Not known to have been produced Witnesses: T. Mynard J. E. Page	Patent Dates: Applied: Jun. 05, 1902 Granted: Oct. 14, 1902 Patent Pictures: [ 1 | 2 | 3 | 4 | 5 ] USPTO (New site tip) Google Patents Report data errors or omissions to steward Steve Gosselin
Description: One of the most detailed Patent drawing I've ever seen.

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