DE Patent: DE-356,319
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Zuendkerzenprüfer
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Patentee:
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Georg Michael Humpfner (exact or similar names) - Wurzburg, Germany |
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Patent Dates:
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Granted: |
Jul. 20, 1922 |
Antedated: |
May 11, 1921 |
Patent Pictures:
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G. M. Humpfner patent July 20, 1922 (edited drawing) |
Espacenet patent
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Stan Schulz DE356319 in ESPACENET
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Description: |
Spark plug tester which folds into the handle of an open end wrench; together with the gapped electrode in DE-363527 produced as a tool marketed in the U.S. as the C.T.H. Plug Tester wrench. (see 1922 description appended to DATAMP entry for DE-363527.
German ads for the tool note "foreign patents." |
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