US2646010A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combined striking, casting, and bolster center filler for railway car construction
Assignee: International Steel Co
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Filing: 1950-12-01
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Granted: 1953-07-21
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Expires: 1970-12-01
Abstract
No abstract record available.
Inventors
- 👤 Karl F Nystrom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 00:15
CPC Classifications
B; B61; B61F; B61F1/00; B61F1/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-07-20 | 1957-01-19 | 1957-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-07-20 | 1961-01-19 | 1961-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-07-20 | 1965-01-19 | 1965-07-21 | $7700.00 | Window Closed / Lapsed |