Patent US5899700A successfully refreshed from Google Patents.
Patent US3790348A successfully refreshed from Google Patents.
Patent US1809601A successfully refreshed from Google Patents.
Patent US847086A successfully refreshed from Google Patents.
Patent US2497035A successfully refreshed from Google Patents.
Patent US2640316A successfully refreshed from Google Patents.
US2640316A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ignition apparatus for turbojet afterburners
Assignee: Westinghouse Electric Corp
•
Filing: 1949-11-07
•
Granted: 1953-06-02
•
Expires: 1969-11-07
Abstract
No abstract record available.
Inventors
- 👤 Robert A Neal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:28
CPC Classifications
F; F02; F02K; F02K3/00; F02K3/08; F02K3/10; Y; Y02; Y02T; Y02T50/00; Y02T50/60
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1956-06-01 | 1956-12-01 | 1957-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-01 | 1960-12-01 | 1961-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-01 | 1964-12-01 | 1965-06-02 | $7700.00 | Window Closed / Lapsed |