Patent US3439612A successfully refreshed from Google Patents.
US3439612A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hybrid flare
Assignee: RTX Corp
•
Filing: 1966-11-14
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Granted: 1969-04-22
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Expires: 1986-11-14
Abstract
No abstract record available.
Inventors
- 👤 William Lai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:35
CPC Classifications
C; C06; C06D; C06D5/00; C06D5/10; F; F02; F02K; F02K9/00; F02K9/42; F02K9/60; F02K9/62; F42; F42B; F42B4/00; F42B4/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2990682A
Cited
US3128599A
Cited
US3144751A
Cited
US3178885A
Cited
US3164093A
Cited
US3289412A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-04-21 | 1972-10-21 | 1973-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-21 | 1976-10-21 | 1977-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-21 | 1980-10-21 | 1981-04-22 | $7700.00 | Window Closed / Lapsed |