US2604339A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flexible tail pipe connection
Assignee: Northrop Grumman Corp
•
Filing: 1948-03-29
•
Granted: 1952-07-22
•
Expires: 1968-03-29
Abstract
No abstract record available.
Inventors
- 👤 Charles W Kaysing
- 👤 George A Mcmahon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:55
CPC Classifications
F; F02; F02K; F02K1/00; F02K1/78; F02K1/80; F16; F16L; F16L27/00; F16L27/10; F16L27/1004; Y; Y02; Y02T; Y02T50/00; Y02T50/60
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) | 1955-07-22 | 1956-01-21 | 1956-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-07-22 | 1960-01-21 | 1960-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-07-22 | 1964-01-21 | 1964-07-22 | $7700.00 | Window Closed / Lapsed |