DG Patent: DG-322,413
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| Windeisen für verschiedene Stärken mit an der Enden befindlichen Schraubenschlüsseln verschiedener Dimensionen
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Patentee:
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| Robert Barlen (exact or similar names) - Düsseldorf, Germany |
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Patent Dates:
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| Granted: |
Oct. 25, 1907 |
| Antedated: |
Oct. 25, 1907 |
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Patent Pictures:
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D.R.G.M. 322413 - edited from "Patentblatt" |
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Stan Schulz
PRAKTIKUS in Der MOTORWAGEN (FLICKR)
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Description: |
| Produced as PRAKTIKUS sets in five sizes, with double-size hex sockets on the ends, and four sizes of square "tap wrench" (Windeisen) openings in the shank. Barlen advertised in a range of technical and trade journals in 1908; the ads claimed the set provided twenty sizes each of square & hexagon wrenches. A write-up in the April 20, 1908 Der MOTORWAGEN provided the D.R.G.M. number.
German Gebrauchsmuster Registrations are not included in online patent sources. They are known only from the German patent office's PATENTBLATT and from lists and notices in trade publications and the like.
German patent Klasse 87 (c). |
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