US3266441A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Railway car underframe and method of manufacture
Assignee: ACF Industries Inc
•
Filing: 1964-09-21
•
Granted: 1966-08-16
•
Expires: 1984-09-21
Abstract
No abstract record available.
Inventors
- 👤 Frank C Pulcrano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:44
CPC Classifications
B; B61; B61F; B61F1/00; B61F1/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1821151A
Cited
US1771090A
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US2624430A
Cited
US2646010A
Cited
US2783718A
Cited
US2764299A
Cited
US2788750A
Cited
US2987014A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-15 | 1970-02-14 | 1970-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-15 | 1974-02-14 | 1974-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-15 | 1978-02-14 | 1978-08-16 | $7700.00 | Window Closed / Lapsed |