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Patent US3396674A successfully refreshed from Google Patents.
US3396674A
Expired / Lapsed
US
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Elevatable and rotatable railway truck
Assignee: Yawata Iron and Steel Co Ltd
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Filing: 1966-12-27
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Granted: 1968-08-13
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Expires: 1986-12-27
Abstract
No abstract record available.
Inventors
- 👤 Tani Shoichi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:41
CPC Classifications
B; B22; B22D; B22D41/00; B22D41/12; C; C21; C21C; C21C5/00; C21C5/28; C21C5/42; C21C5/46; C21C5/4686
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1189501A
Cited
US3312544A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-08-13 | 1972-02-12 | 1972-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-08-13 | 1976-02-12 | 1976-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-08-13 | 1980-02-12 | 1980-08-13 | $7700.00 | Window Closed / Lapsed |