Patent US2591858A successfully refreshed from Google Patents.
US2591858A
Expired / Lapsed
US
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Double walled mold for casting long ingots
Assignee: Individual
•
Filing: 1949-04-19
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Granted: 1952-04-08
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Expires: 1969-04-19
Abstract
No abstract record available.
Inventors
- 👤 Ostendorf Peter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:45
CPC Classifications
B; B22; B22D; B22D11/00; B22D11/04; B22D11/041; B22D11/08; H; H01; H01F; H01F27/00; H01F27/24; H01F27/25
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US59189A
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US1385595A
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US1472200A
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US1692550A
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US1988425A
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US1936280A
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US2107322A
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US2264456A
Cited
US2310893A
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US2479191A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-04-08 | 1955-10-08 | 1956-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-08 | 1959-10-08 | 1960-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-08 | 1963-10-08 | 1964-04-08 | $7700.00 | Window Closed / Lapsed |