US2595370A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Arrangement for ventilating of railway carriages, buses and similar vehicles
Assignee: Svenska Flaktfabriken AB
•
Filing: 1947-10-23
•
Granted: 1952-05-06
•
Expires: 1967-10-23
Abstract
No abstract record available.
Inventors
- 👤 Rygard Sune Ossian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:02
CPC Classifications
B; B61; B61D; B61D27/00; B61D27/009; B60; B60H; B60H1/00; B60H1/00457; B60H1/00464
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US757348A
Cited
GB371219A
Cited
GB388145A
Cited
US2126230A
Cited
US2199525A
Cited
US2274033A
Cited
US2189008A
Cited
US2190937A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-05-06 | 1955-11-05 | 1956-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-05-06 | 1959-11-05 | 1960-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-05-06 | 1963-11-05 | 1964-05-06 | $7700.00 | Window Closed / Lapsed |