US2958188A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Engine exhaust apparatus
Assignee: Lockheed Martin Corp
•
Filing: 1957-08-05
•
Granted: 1960-11-01
•
Expires: 1977-08-05
Abstract
No abstract record available.
Inventors
- 👤 Murray I Leitner
- 👤 Traksel Johan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:34
CPC Classifications
F; F02; F02K; F02K1/00; F02K1/38; F02K1/386; Y; Y02; Y02T; Y02T50/00; Y02T50/60
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2653445A
Cited
US2597253A
Cited
US2614747A
Cited
US2591676A
Cited
US2648192A
Cited
US2882679A
Cited
US2844001A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-11-01 | 1964-05-02 | 1964-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-01 | 1968-05-02 | 1968-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-01 | 1972-05-02 | 1972-11-01 | $7700.00 | Window Closed / Lapsed |