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DE Patent: DE-210
Schraubenschlüssel
Patentees:
Fr. W. Schmidt (exact or similar names) - Berlin, Germany
J. Brandt (exact or similar names) - Berlin, Germany
G. W. von Nawrocki (exact or similar names) - Berlin, Germany

USPTO Classifications:

Tool Categories:
wrenches : wrench adjustment types : quick adjust wrenches

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
none listed

Patent Dates:
Granted: Aug. 31, 1877
Antedated: Aug. 31, 1877

Patent Pictures:
German patent 210 - composite edited image
Espacenet patent
Report data errors or omissions to steward Stan Schulz
German patent 210 in ESPACENET
Description:
A spring opens the jaws; the opening is adjusted by a slide with internal teeth that engage rack teeth on the exterior of the two sides.

Brandt and von Nawrocki appear to have been patent agents as their names appear on a wide range of German patents of the period.

German patent Klasse 87 (a) Gruppe 10.

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