US3030770A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable supersonic inlet
Assignee: RTX Corp
•
Filing: 1957-07-30
•
Granted: 1962-04-24
•
Expires: 1977-07-30
Abstract
No abstract record available.
Inventors
- 👤 Elliot D Ranard
- 👤 Kepler Charles Edward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:12
CPC Classifications
F; F02; F02C; F02C7/00; F02C7/04; F02C7/042; Y; Y10; Y10T; Y10T137/00; Y10T137/0536
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2589945A
Cited
US2966028A
Cited
GB687338A
Cited
US2975587A
Cited
FR1075248A
Cited
US2861419A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-04-23 | 1965-10-23 | 1966-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-04-23 | 1969-10-23 | 1970-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-04-23 | 1973-10-23 | 1974-04-24 | $7700.00 | Window Closed / Lapsed |