US2854930A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Screening assembly for screening and returning railway ballast and rail set off means therefor
Assignee: Nordberg Manufacturing Co
•
Filing: 1953-05-14
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Granted: 1958-10-07
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Expires: 1973-05-14
Abstract
No abstract record available.
Inventors
- 👤 Henry H Talboys
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:36
CPC Classifications
E; E01; E01B; E01B27/00; E01B27/06; E01B27/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2520944A
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US2633811A
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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) | 1961-10-06 | 1962-04-07 | 1962-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-06 | 1966-04-07 | 1966-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-06 | 1970-04-07 | 1970-10-07 | $7700.00 | Window Closed / Lapsed |