US2479046A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Limiting heat transfer to the turbine rotor
Assignee: RTX Corp
•
Filing: 1944-08-23
•
Granted: 1949-08-16
•
Expires: 1964-08-23
Abstract
No abstract record available.
Inventors
- 👤 Walter A Ledwith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 08:49
CPC Classifications
F; F01; F01D; F01D5/00; F01D5/02; F01D5/06; F01D5/066; F01D5/08; F01D5/12; F01D5/28; F01D5/288; Y; Y02; Y02T; Y02T50/00; Y02T50/60
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1580878A
Cited
CH110346A
Cited
GB452412A
Cited
US2008520A
Cited
US2073605A
Cited
US2141401A
Cited
US2269181A
Cited
US2401826A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-08-15 | 1953-02-14 | 1953-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-08-15 | 1957-02-14 | 1957-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-08-15 | 1961-02-14 | 1961-08-16 | $7700.00 | Window Closed / Lapsed |