US2889596A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Casting of metals
Assignee: British Iron and Steel Research Association BISRA
•
Filing: 1957-02-26
•
Granted: 1959-06-09
•
Expires: 1977-02-26
Abstract
No abstract record available.
Inventors
- 👤 Savage John
- 👤 Smith Bernard Owen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:52
CPC Classifications
B; B22; B22D; B22D11/00; B22D11/16; B22D11/18; B22D11/181
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1139888A
Cited
US2140607A
Cited
US2295041A
Cited
US2379401A
Cited
US2356013A
Cited
GB697669A
Cited
US2825104A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-06-08 | 1962-12-08 | 1963-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-06-08 | 1966-12-08 | 1967-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-06-08 | 1970-12-08 | 1971-06-09 | $7700.00 | Window Closed / Lapsed |