US2680001A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Arrangement for cooling turbine bearings
Assignee: RTX Corp
•
Filing: 1950-11-13
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Granted: 1954-06-01
•
Expires: 1970-11-13
Abstract
No abstract record available.
Inventors
- 👤 Richard W Batt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:24
CPC Classifications
F; F01; F01D; F01D25/00; F01D25/08; F01D25/12; F01D25/125; F01D9/00; F01D9/06; F01D9/065; F16; F16C; F16C2360/00; F16C2360/23; F16C37/00; F16C37/007; Y; Y02; Y02T; Y02T50/00; Y02T50/60
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB595346A
Cited
GB595348A
Cited
US2401826A
Cited
US2414788A
Cited
US2425177A
Cited
US2479573A
Cited
US2620157A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-05-31 | 1957-11-30 | 1958-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-31 | 1961-11-30 | 1962-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-31 | 1965-11-30 | 1966-06-01 | $7700.00 | Window Closed / Lapsed |