US2782873A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device in electrical rail brakes
Assignee: EKSJOVERKAN AB
•
Filing: 1952-07-31
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Granted: 1957-02-26
•
Expires: 1972-07-31
Abstract
No abstract record available.
Inventors
- 👤 Smith Sverre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 10:05
CPC Classifications
B; B61; B61H; B61H7/00; B61H7/02; B61H7/04; B61H7/06; B61H7/08; B61H7/086
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CA473367A
Cited
GB368127A
Cited
US1879702A
Cited
US2178643A
Cited
US2103354A
Cited
US2130615A
Cited
US2318257A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-02-26 | 1960-08-27 | 1961-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-02-26 | 1964-08-27 | 1965-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-02-26 | 1968-08-27 | 1969-02-26 | $7700.00 | Window Closed / Lapsed |