Patent US2487514A successfully refreshed from Google Patents.
US2487514A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Turbine rotor cooling
Assignee: JARVIS C MARBLE
•
Filing: 1943-12-01
•
Granted: 1949-11-08
•
Expires: 1963-12-01
Abstract
No abstract record available.
Inventors
- 👤 Boestad Gustav Karl William
- 👤 Eriksson Erik Otto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:24
CPC Classifications
F; F02; F02C; F02C7/00; F02C7/12; F02C7/16; F02C7/18; F01; F01D; F01D11/00; F01D11/08; F01D11/14; F01D11/20; F01D11/24; F01D5/00; F01D5/02; F01D5/08; F01D5/085
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
DE406701C
Cited
US1595278A
Cited
GB290014A
Cited
GB340421A
Cited
DE491738C
Cited
US2245954A
Cited
US2243467A
Cited
US2213940A
Cited
US2333053A
Cited
US2353929A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-11-07 | 1953-05-09 | 1953-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-11-07 | 1957-05-09 | 1957-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-11-07 | 1961-05-09 | 1961-11-08 | $7700.00 | Window Closed / Lapsed |