Patent US2843055A successfully refreshed from Google Patents.
US2843055A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Railway track ballast tamping apparatus
Assignee: Individual
•
Filing: 1955-12-16
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Granted: 1958-07-15
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Expires: 1975-12-16
Abstract
No abstract record available.
Inventors
- 👤 Samuel R Hursh
- 👤 James B Mcwilliams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:32
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
US2587324A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-07-14 | 1962-01-13 | 1962-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-14 | 1966-01-13 | 1966-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-14 | 1970-01-13 | 1970-07-15 | $7700.00 | Window Closed / Lapsed |