Patent US2923040A successfully refreshed from Google Patents.
US2923040A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Casting process and machine
Assignee: Alcoa Corp
•
Filing: 1956-07-16
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Granted: 1960-02-02
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Expires: 1976-07-16
Abstract
No abstract record available.
Inventors
- 👤 Carl L Goodwin
- 👤 William T Ennor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:14
CPC Classifications
B; B22; B22D; B22D18/00; B22D18/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US14115A
Cited
US471527A
Cited
US1708011A
Cited
US698593A
Cited
US914679A
Cited
US1606236A
Cited
US1673415A
Cited
US1763710A
Cited
US1817483A
Cited
US1972945A
Cited
US1952201A
Cited
US2120333A
Cited
US2248868A
Cited
US2367303A
Cited
GB553353A
Cited
US2379401A
Cited
US2402913A
Cited
US2544598A
Cited
US2704388A
Cited
US2863188A
Cited
US2787815A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-02-01 | 1963-08-03 | 1964-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-02-01 | 1967-08-03 | 1968-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-02-01 | 1971-08-03 | 1972-02-02 | $7700.00 | Window Closed / Lapsed |