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DG Patent: DG-257,274
Verstellbarer Schraubenschlüssel , u.s.w.
Patentee:
Wilhelm Dörner (exact or similar names) - Radeformwald-Feldmannshaus, Germany

USPTO Classifications:

Tool Categories:
wrenches : wrench components : wrench handle components

Assignees:
None

Manufacturer:
Unknown

Witnesses:
Unknown

Patent Dates:
Granted: Aug. 16, 1905
Antedated: Jul. 06, 1905

Patent Pictures:
German D.R.G.M. 257,274, etc - edited
Report data errors or omissions to steward Stan Schulz
Description:
Google translate: "Adjustable wrench, the shaft of which is made from a flat iron rod and is formed into a curved handle and then into a screw spindle."

Known example marked "C.B. BEST D.R.G.M. 257274;" a 1918 catalog attached to a Hungarian Bee-Keeping journal lists the wrench.

German Gebrauchsmuster Registrations are not included in online patent sources. They are documented only from the German patent office's PATENTBLATT (where they are listed in order by Patent classification rather than by registration number) and from lists and notices in trade publications and the like.

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