US2596913A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Railway car side door
Assignee: Individual
•
Filing: 1948-03-13
•
Granted: 1952-05-13
•
Expires: 1968-03-13
Abstract
No abstract record available.
Inventors
- 👤 Karl F Nystrom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 06:18
CPC Classifications
B; B61; B61D; B61D19/00; B61D19/001; B61D19/002
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1104129A
Cited
US1967819A
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US1893105A
Cited
US2299968A
Cited
US2340014A
Cited
US2397335A
Cited
US2372394A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-05-13 | 1955-11-12 | 1956-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-05-13 | 1959-11-12 | 1960-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-05-13 | 1963-11-12 | 1964-05-13 | $7700.00 | Window Closed / Lapsed |