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Type | Mechanical corkscrew | N° 412 |
Subcategory |
Ball bearing | ||
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Mark |
TRADE MARK KORKMASTER PAT PENDING |
N° patent: 148.810 | |
Description |
Marshall T. McDowell was granted design patent number 148.810 on february 24, 1948 for his rack and pinion design. His application had been filed almost two years before on april 25, 1945 world year II had helped make aluminum a household word and that was the material McDowell chose for his corkscrew. Purchased in Fort Myers (United States). |
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| Length | Overall length: 6 5/8 inches
(16,5 centimeters) Worm: 1 3/4 iinches (4,5 centimeters) - 5 peak helical Handle: 2 3/4 inches (7 centimeters) |
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Weight |
6,30 onces (180 grammes) | ||
Valuation |
160 USD (102 €) - Valuation march 15, 2008 |
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Bibliography |
The mechanical corkscrew: page 99 |
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