US2956513A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ballast tamping machine
Assignee: Individual
•
Filing: 1956-09-07
•
Granted: 1960-10-18
•
Expires: 1976-09-07
Abstract
No abstract record available.
Inventors
- 👤 Frank H Philbrick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 08:22
CPC Classifications
E; E01; E01B; E01B27/00; E01B27/12; E01B27/13; E01B27/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2734463A
Cited
US2082594A
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US2536887A
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US2482123A
Cited
US2482796A
Cited
US2482111A
Cited
US2696792A
Cited
US2791971A
Cited
FR1101408A
Cited
US2795198A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-10-18 | 1964-04-18 | 1964-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-10-18 | 1968-04-18 | 1968-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-10-18 | 1972-04-18 | 1972-10-18 | $7700.00 | Window Closed / Lapsed |