Patent US3000425A successfully refreshed from Google Patents.
US3000425A
Expired / Lapsed
US
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Method and apparatus for forming sheet metal
Assignee: Eastman Kodak Co
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Filing: 1957-04-24
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Granted: 1961-09-19
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Expires: 1977-04-24
Abstract
No abstract record available.
Inventors
- 👤 Howard T Hodges
- 👤 Erwin J Mcguire
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:30
CPC Classifications
B; B21; B21D; B21D31/00; B21D31/06; B24; B24C; B24C1/00; B24C1/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US493473A
Cited
US1194321A
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DE575278C
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US1728207A
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US1819331A
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US1940539A
Cited
US2358710A
Cited
US2701408A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-09-18 | 1965-03-20 | 1965-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-09-18 | 1969-03-20 | 1969-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-09-18 | 1973-03-20 | 1973-09-19 | $7700.00 | Window Closed / Lapsed |