Patent US2925637A successfully refreshed from Google Patents.
US2925637A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of metal ingots and castings
Assignee: Foundry Services Ltd
•
Filing: 1957-03-29
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Granted: 1960-02-23
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Expires: 1977-03-29
Abstract
No abstract record available.
Inventors
- 👤 Edmonds Robert Charles
- 👤 Keyworth Alan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:29
CPC Classifications
B; B22; B22D; B22D7/00; B22D7/06; B22D7/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1493602A
Cited
US1818477A
Cited
US2390500A
Cited
US2591105A
Cited
FR1084725A
Cited
FR1112520A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-02-22 | 1963-08-24 | 1964-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-02-22 | 1967-08-24 | 1968-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-02-22 | 1971-08-24 | 1972-02-23 | $7700.00 | Window Closed / Lapsed |