Patent US5635638A successfully refreshed from Google Patents.
Patent US2461099A successfully refreshed from Google Patents.
US2461099A
Expired / Lapsed
US
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Metal-casting mold
Assignee: ALLOY CAST STEEL Co
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Filing: 1945-03-30
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Granted: 1949-02-08
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Expires: 1965-03-30
Abstract
No abstract record available.
Inventors
- 👤 Cline H Welch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:51
CPC Classifications
B; B22; B22C; B22C9/00; B22C9/08; B22C9/088
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US508884A
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US694315A
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US1410775A
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US1347168A
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US1474889A
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US1657952A
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US1768254A
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US1922677A
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US2150510A
Cited
US2313517A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-02-08 | 1952-08-09 | 1953-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-02-08 | 1956-08-09 | 1957-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-02-08 | 1960-08-09 | 1961-02-08 | $7700.00 | Window Closed / Lapsed |