Metal deforming – By application of fluent medium – or energy field – Using fixed die
Patent
1980-05-19
1982-09-07
Larson, Lowell A.
Metal deforming
By application of fluent medium, or energy field
Using fixed die
72197, 72379, B21D 5122
Patent
active
043477224
ABSTRACT:
A metal sheet is deformed to produce a blank which has one side which is smooth and another side which is ornamented with a pattern of raised and/or depressed areas. The blank is deformed to produce a cooking vessel which has the ornamented side located on its exterior surface.
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patent: 3670546 (1972-06-01), DeLaSierra
patent: 3962895 (1976-06-01), Rydell
patent: 4192166 (1980-03-01), Johnson
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