Patent US3030768A successfully refreshed from Google Patents.
US3030768A
Expired / Lapsed
US
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Fuel control device for ram-jet engines
Assignee: Individual
•
Filing: 1952-07-17
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Granted: 1962-04-24
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Expires: 1972-07-17
Abstract
No abstract record available.
Inventors
- 👤 Robert L Yahnke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:15
CPC Classifications
F; F02; F02K; F02K7/00; F02K7/10; F04; F04F; F04F5/00; F04F5/44; F04F5/48; Y; Y10; Y10T; Y10T137/00; Y10T137/0536; Y10T137/0645
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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 |