US2899759A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dual speed railroad ballast cleaner
Assignee: —
•
Filing: —
•
Granted: 1959-08-18
•
Expires: 1976-08-18
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:41
CPC Classifications
E; E01; E01B; E01B27/00; E01B27/06; E01B27/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US865261A
Cited
US1471760A
Cited
GB292981A
Cited
US1778690A
Cited
US1792148A
Cited
US2309712A
Cited
US2344764A
Cited
US2284035A
Cited
FR1001966A
Cited
US2609619A
Cited
US2624130A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-08-17 | 1963-02-16 | 1963-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-17 | 1967-02-16 | 1967-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-17 | 1971-02-16 | 1971-08-18 | $7700.00 | Window Closed / Lapsed |