US2507775A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for thawing materials
Assignee: Carnegie Illinois Steel Corp
•
Filing: 1945-08-08
•
Granted: 1950-05-16
•
Expires: 1965-08-08
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:48
CPC Classifications
B; B61; B61D; B61D7/00; B61D7/14; B61D7/32
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US750588A
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US1277996A
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US1638812A
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US1638811A
Cited
US1746799A
Cited
US1968775A
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US2110209A
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US2385962A
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US2355814A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-05-15 | 1953-11-14 | 1954-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-05-15 | 1957-11-14 | 1958-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-05-15 | 1961-11-14 | 1962-05-16 | $7700.00 | Window Closed / Lapsed |