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US2887066A
Expired / Lapsed
US
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Method and machine for tamping railway ballast
Assignee: Nordberg Manufacturing Co
•
Filing: 1955-12-23
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Granted: 1959-05-19
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Expires: 1975-12-23
Abstract
No abstract record available.
Inventors
- 👤 Henry H Talboys
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 20:14
CPC Classifications
E; E01; E01B; E01B27/00; E01B27/12; E01B27/13; E01B27/16
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) | 1962-05-18 | 1962-11-17 | 1963-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-18 | 1966-11-17 | 1967-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-18 | 1970-11-17 | 1971-05-19 | $7700.00 | Window Closed / Lapsed |