Patent US3674453A successfully refreshed from Google Patents.
Patent US2968260A successfully refreshed from Google Patents.
US2968260A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rail guide carriage for vehicles
Assignee: Individual
•
Filing: 1956-02-27
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Granted: 1961-01-17
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Expires: 1976-02-27
Abstract
No abstract record available.
Inventors
- 👤 Alfred H Scheldrup
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:32
CPC Classifications
B; B61; B61C; B61C11/00; B61C11/005
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
BE504913A
Cited
US1727114A
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US1800236A
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US1948367A
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US2010490A
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US2158399A
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US2478647A
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US2577830A
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US2482564A
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US2588597A
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US2593209A
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US2551097A
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US2669424A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-01-17 | 1964-07-18 | 1965-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-17 | 1968-07-18 | 1969-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-17 | 1972-07-18 | 1973-01-17 | $7700.00 | Window Closed / Lapsed |