Patent US2717559A successfully refreshed from Google Patents.
US2717559A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Railway truck spring suspension
Assignee: Old Carco LLC
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Filing: 1950-07-08
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Granted: 1955-09-13
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Expires: 1970-07-08
Abstract
No abstract record available.
Inventors
- 👤 Robert N Janeway
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:01
CPC Classifications
B; B61; B61F; B61F5/00; B61F5/02; B61F5/04; B61F5/12; B61F5/122
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US655738A
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US1990379A
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US2326993A
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US2434287A
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US2483858A
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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) | 1958-09-12 | 1959-03-14 | 1959-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-09-12 | 1963-03-14 | 1963-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-09-12 | 1967-03-14 | 1967-09-13 | $7700.00 | Window Closed / Lapsed |