US2828957A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Suspension system for bogies of railway and like vehicles
Assignee: Metalastik Ltd
•
Filing: 1954-12-17
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Granted: 1958-04-01
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Expires: 1974-12-17
Abstract
No abstract record available.
Inventors
- 👤 Hirst Archie John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:22
CPC Classifications
B; B61; B61F; B61F5/00; B61F5/02; B61F5/04; B61F5/08; F; F16; F16F; F16F1/00; F16F1/36; F16F1/40; F16F1/42; F16F1/52; F16F1/54; F16F2236/00; F16F2236/12; F16F2236/123
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1538737A
Cited
US2352030A
Cited
US2295554A
Cited
GB648516A
Cited
US2603479A
Cited
US2606018A
Cited
US2688479A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-03-31 | 1961-09-30 | 1962-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-31 | 1965-09-30 | 1966-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-31 | 1969-09-30 | 1970-04-01 | $7700.00 | Window Closed / Lapsed |