US2912476A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Casting furnace
Assignee: Oregon Metallurgical Corp
•
Filing: 1957-04-22
•
Granted: 1959-11-10
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Expires: 1977-04-22
Abstract
No abstract record available.
Inventors
- 👤 Willis A Aschoff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:00
CPC Classifications
F; F27; F27D; F27D11/00; F27D11/08; H; H05; H05B; H05B7/00; H05B7/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1472286A
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US2675414A
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US2845293A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-09 | 1963-05-11 | 1963-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-09 | 1967-05-11 | 1967-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-09 | 1971-05-11 | 1971-11-10 | $7700.00 | Window Closed / Lapsed |