US2745663A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: United States Steel Corp
•
Filing: 1953-08-14
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Granted: 1956-05-15
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Expires: 1973-08-14
Abstract
No abstract record available.
Inventors
- 👤 Merrill V Hamilton
- 👤 Morris E Hoop
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:53
CPC Classifications
B; B23; B23D; B23D33/00; B23D33/02; B21; B21C; B21C47/00; B21C47/34; B23D19/00; B23D19/04; B23D19/06; Y; Y10; Y10T; Y10T83/00; Y10T83/727; Y10T83/741
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2121947A
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US2296753A
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US2320659A
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US2356010A
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US2633355A
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US2560039A
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US2626146A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-05-15 | 1959-11-14 | 1960-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-15 | 1963-11-14 | 1964-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-15 | 1967-11-14 | 1968-05-15 | $7700.00 | Window Closed / Lapsed |