US2856667A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Semi-automatic tamping machine
Assignee: —
•
Filing: —
•
Granted: 1958-10-21
•
Expires: 1975-10-21
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:36
CPC Classifications
B; B28; B28B; B28B1/00; B28B1/02; Y; Y10; Y10S; Y10S425/00; Y10S425/035
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1149669A
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US1751049A
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US1977699A
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US2190807A
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US2138620A
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US2366780A
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US2167386A
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US2374553A
Cited
US2366297A
Cited
US2626738A
Cited
US2565949A
Cited
US2710988A
Cited
US2770862A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-10-20 | 1962-04-21 | 1962-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-20 | 1966-04-21 | 1966-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-20 | 1970-04-21 | 1970-10-21 | $7700.00 | Window Closed / Lapsed |