US2590473A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Locomotive
Assignee: Pennsylvania Railroad Co
•
Filing: 1946-03-25
•
Granted: 1952-03-25
•
Expires: 1966-03-25
Abstract
No abstract record available.
Inventors
- 👤 Carleton K Steins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 15:05
CPC Classifications
B; B61; B61C; B61C15/00; B61C15/04; B61C15/06; Y; Y10; Y10T; Y10T137/00; Y10T137/6851; Y10T137/6855; Y10T137/6858; Y10T137/7287; Y10T137/7358; Y10T137/7381; Y10T137/74
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) | 1955-03-25 | 1955-09-24 | 1956-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-03-25 | 1959-09-24 | 1960-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-03-25 | 1963-09-24 | 1964-03-25 | $7700.00 | Window Closed / Lapsed |