Patent US2639490A successfully refreshed from Google Patents.
US2639490A
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Formation of metal strip under controlled pressures
Assignee: Individual
•
Filing: 1948-08-12
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Granted: 1953-05-26
•
Expires: 1968-08-12
Abstract
No abstract record available.
Inventors
- 👤 Joseph B Brennan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:37
CPC Classifications
C; C23; C23C; C23C4/00; C23C4/18; C23C4/185; B; B22; B22D; B22D11/00; B22D11/06; B22D11/0631; B22D11/0637; B22D11/0697; C23C4/12; C23C4/137; Y; Y10; Y10T; Y10T29/00; Y10T29/30; Y10T29/301; Y10T29/49; Y10T29/4981; Y10T29/49812
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1164008A
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US1299988A
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US1496309A
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US1654509A
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US2159297A
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US2074281A
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US2217039A
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US2382065A
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US2332309A
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US2402269A
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US2423051A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-05-25 | 1956-11-24 | 1957-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-05-25 | 1960-11-24 | 1961-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-05-25 | 1964-11-24 | 1965-05-26 | $7700.00 | Window Closed / Lapsed |