US2811114A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Railway truck structue
Assignee: General Steel Castings Corp
•
Filing: 1951-04-30
•
Granted: 1957-10-29
•
Expires: 1971-04-30
Abstract
No abstract record available.
Inventors
- 👤 James C Travilla
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:04
CPC Classifications
B; B61; B61F; B61F3/00; B61F3/02; B61F3/04; B61H; B61H1/00; B61H1/003
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-10-28 | 1961-04-29 | 1961-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-10-28 | 1965-04-29 | 1965-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-10-28 | 1969-04-29 | 1969-10-29 | $7700.00 | Window Closed / Lapsed |