US2997758A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hot tops for ingot moulds and method of making the same
Assignee: SKF AB
•
Filing: 1958-01-13
•
Granted: 1961-08-29
•
Expires: 1978-01-13
Abstract
No abstract record available.
Inventors
- 👤 Tiberg Magnus Georg
- 👤 Kjellberg Sven Axel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 04:04
CPC Classifications
B; B22; B22D; B22D7/00; B22D7/06; B22D7/10; B22D7/108
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1689174A
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US1022343A
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US1668567A
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US1650700A
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GB570719A
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US2513212A
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US2652609A
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US2846741A
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CH525428A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-08-28 | 1965-02-27 | 1965-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-28 | 1969-02-27 | 1969-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-28 | 1973-02-27 | 1973-08-29 | $7700.00 | Window Closed / Lapsed |