US2435557A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air-cooler for internal-combustion turbines
Assignee: Rolls Royce PLC
•
Filing: 1943-10-08
•
Granted: 1948-02-03
•
Expires: 1963-10-08
Abstract
No abstract record available.
Inventors
- 👤 Eyre Donald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:13
CPC Classifications
F; F02; F02C; F02C7/00; F02C7/12; F02C7/14; F28; F28D; F28D7/00; F28D7/04
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1015404A
Cited
US984911A
Cited
US1110065A
Cited
US1610651A
Cited
US1960810A
Cited
US2019879A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-02-02 | 1951-08-04 | 1952-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-02-02 | 1955-08-04 | 1956-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-02-02 | 1959-08-04 | 1960-02-03 | $7700.00 | Window Closed / Lapsed |