US2737301A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Buffers for railway, tramway and like vehicles
Assignee: LEVITATION Ltd
•
Filing: 1952-12-01
•
Granted: 1956-03-06
•
Expires: 1972-12-01
Abstract
No abstract record available.
Inventors
- 👤 Thornhill Peter Warborn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:47
CPC Classifications
B; B61; B61G; B61G11/00; B61G11/12; F; F16; F16F; F16F9/00; F16F9/32; F16F9/34; F16F9/342
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1470153A
Cited
US1772387A
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US2243782A
Cited
US2348160A
Cited
US2370942A
Cited
US2564790A
Cited
US2624471A
Cited
US2614833A
Cited
US2679827A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-03-06 | 1959-09-05 | 1960-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-03-06 | 1963-09-05 | 1964-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-03-06 | 1967-09-05 | 1968-03-06 | $7700.00 | Window Closed / Lapsed |