Patent US3479968A successfully refreshed from Google Patents.
US3479968A
Expired / Lapsed
US
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Low slung railroad car
Assignee: Individual
•
Filing: 1968-01-17
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Granted: 1969-11-25
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Expires: 1988-01-17
Abstract
No abstract record available.
Inventors
- 👤 George Crompton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 20:41
CPC Classifications
B; B60; B60B; B60B17/00; B61; B61C; B61C9/00; B61C9/08; B61C9/24; H; H02; H02K; H02K17/00; H02K17/02; H02K17/16; H02K7/00; H02K7/14
Claims Analysis
Total Claims: 0
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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) | 1972-11-24 | 1973-05-26 | 1973-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-24 | 1977-05-26 | 1977-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-24 | 1981-05-26 | 1981-11-25 | $7700.00 | Window Closed / Lapsed |