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DE Patent: DE-66,620
Verstellbarer Schraubenschlüssel
Patentee:
Ernst Liebing (exact or similar names) - Berlin, Germany

USPTO Classifications:

Tool Categories:
wrenches : wrench adjustment types : auxiliary levers on wrenches

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
none listed

Patent Dates:
Granted: Jan. 07, 1893
Antedated: Mar. 27, 1892

Patent Pictures:
Ernst Liebing patent Nr, 66620 (image edited)
Espacenet patent
Report data errors or omissions to steward Stan Schulz
German patent 66620 in ESPACENET
Description:
Teeth on a lever handle engage rack teeth on a sliding jaw to effect clamping action. The principle is described as employed in a nut wrench, pipe wrench, etc.

German patent Klasse 87 (a) Gruppe 8.

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