DK Patent: DK-69,670
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| Skruenøgle ("wrench")
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Patentees:
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| Hans Friedrich Madsen (exact or similar names) - Copenhagen, Denmark |
| Oluf Rønberg (exact or similar names) - Copenhagen, Denmark |
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Patent Dates:
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| Applied: |
Nov. 01, 1947 |
| Granted: |
Jul. 25, 1949 |
| Antedated: |
Oct. 30, 1947 |
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Patent Pictures:
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Danish patent 69670 - edited image |
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Stan Schulz
Patent DK69670 in ESPACENET
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Description: |
| A sliding jaw segment self-adjusts to maintain parallel orientation to a second jaw face, in a " spring-tensioned swinging hook jaw" wrench frame. The patent was issued to the CROMNA firm.
The comparable British patent [GB-629,209] names the patentees.
Wrenches made in Europe and marked with this Danish patent number actually reflect alterations appearing in British patent no. GB-645,532 (published Nov. 1, 1950) and U.S. patent number 2,570,991 ( granted Oct. 9, 1951). |
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