Patent US3203218A successfully refreshed from Google Patents.
US3203218A
Expired / Lapsed
US
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Method and apparatus for forming metal containers
Assignee: Primerica Inc
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Filing: 1961-05-22
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Granted: 1965-08-31
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Expires: 1981-05-22
Abstract
No abstract record available.
Inventors
- 👤 Bolt Richard Robert
- 👤 Wobbe Delbert Edmund
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:55
CPC Classifications
B; B21; B21D; B21D22/00; B21D22/20; B21D22/22; B21D45/00; B21D45/06; Y; Y10; Y10S; Y10S425/00; Y10S425/048
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
114 words
AN APPARATUS FOR FORMING A METAL BLANK HAVING A SUBSTANTIALLY UNIFORM THICKNESS INTO A CUP-SHAPED ONE PIECE HOLLOW METAL ARTICLE HAVING A RELATIVELY THIN SIDE WALL AS COMPARED TO THE END THEREOF AND AN END THICKNESS EQUAL TO THAT OF SAID BLANK COMPRISING A PUNCH HAVING A LONGITUDINAL AXIS, MEANS FOR FORCIBLY MOVING SAID PUNCH ALONG SAID LONGITUDINAL AXIS, HOLDING MEANS ADAPTED TO POSITION AND RELEASABLY PRESS A PERIPHERAL MARGIN OF SAID BLANK AGAINST A HOLDING SURFACE WITH A SUBSTANTIAL PREDETERMINED FORCE, AND UNITARY DIE MEANS HAVING A DIE OPENING IN AXIAL ALIGNMENT WITH SAID LONGITUDINAL AXIS OF SAID PUNCH SAID HOLDING SURFACE COMPRISING A SURFACE OF SAID DIE MEANS SURROUNDING SAID DIE OPENING,
References Cited (Backward Citations)
US2735390A
Cited
DE523111C
Cited
US2255116A
Cited
US2270186A
Cited
US2412813A
Cited
US2545570A
Cited
US2531663A
Cited
US2559679A
Cited
US2615412A
Cited
US2821156A
Cited
US2761406A
Cited
US2972971A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-30 | 1969-03-01 | 1969-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-30 | 1973-03-01 | 1973-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-30 | 1977-03-01 | 1977-08-31 | $7700.00 | Window Closed / Lapsed |