US2652131A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Retractable screen for the air intake of jet engine and shields or shutters or the same
Assignee: Individual
•
Filing: 1950-07-22
•
Granted: 1953-09-15
•
Expires: 1970-07-22
Abstract
No abstract record available.
Inventors
- 👤 Thomas N Kelly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:48
CPC Classifications
B; B64; B64D; B64D33/00; B64D33/02; F; F02; F02C; F02C7/00; F02C7/04; F02C7/05; F02C7/055; B64D2033/022
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2381705A
Cited
US2407194A
Cited
US2467305A
Cited
US2464962A
Cited
US2555592A
Cited
US2546153A
Cited
US2534138A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-09-14 | 1957-03-16 | 1957-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-09-14 | 1961-03-16 | 1961-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-09-14 | 1965-03-16 | 1965-09-15 | $7700.00 | Window Closed / Lapsed |