US2587324A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ballast tamping apparatus
Assignee: HURSH
•
Filing: 1948-10-08
•
Granted: 1952-02-26
•
Expires: 1968-10-08
Abstract
No abstract record available.
Inventors
- 👤 Samuel R Hursh
- 👤 Clarence J Reigh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:58
CPC Classifications
E; E01; E01B; E01B27/00; E01B27/12; E01B27/13; E01B27/16; E01B27/17; E01B2203/00; E01B2203/10; E01B2203/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2497682A
Cited
US816076A
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US913716A
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US1392451A
Cited
US1602023A
Cited
US1727114A
Cited
US2107639A
Cited
US2052943A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-02-25 | 1955-08-27 | 1956-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-02-25 | 1959-08-27 | 1960-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-02-25 | 1963-08-27 | 1964-02-26 | $7700.00 | Window Closed / Lapsed |