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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 ]
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Description:
One of the most detailed Patent drawing I've ever seen.

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