US2320802A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Railway braking apparatus
Assignee: Hitachi Rail STS USA Inc
•
Filing: 1941-12-24
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Granted: 1943-06-01
•
Expires: 1961-12-24
Abstract
No abstract record available.
Inventors
- 👤 Clarence S Snavely
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:03
CPC Classifications
B; B61; B61K; B61K7/00; B61K7/02; B61K7/12; B61K7/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1946-05-31 | 1946-11-30 | 1947-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1950-05-31 | 1950-11-30 | 1951-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1954-05-31 | 1954-11-30 | 1955-06-01 | $7700.00 | Window Closed / Lapsed |