Stock material or miscellaneous articles – Circular sheet or circular blank – Recording medium or carrier
Patent
1976-01-09
1978-05-16
Gilden, Leon
Stock material or miscellaneous articles
Circular sheet or circular blank
Recording medium or carrier
113121A, 220357, 220359, B21D 5100, F24M 300
Patent
active
040900045
ABSTRACT:
A lid and ring to receive it are made from a piece of sheet metal by drawing a preform which has a first portion surrounding a second portion, separating the first portion from the second portion and further forming it to a ring adapted to receive a lid formed from the second portion.
REFERENCES:
patent: 546498 (1895-09-01), Sturges
patent: 1884699 (1932-10-01), Hothersoll
patent: 1915299 (1933-06-01), Draper
patent: 2197439 (1940-04-01), Sebell
patent: 3085324 (1963-04-01), Nelson
Still Charles D. V.
Tebbutt Charles N.
Gilden Leon
Metal Box Limited
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