Patent US2933891A successfully refreshed from Google Patents.
US2933891A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Jet pipe arrangements for jet propulsion engines
Assignee: Rolls Royce PLC
•
Filing: 1954-06-21
•
Granted: 1960-04-26
•
Expires: 1974-06-21
Abstract
No abstract record available.
Inventors
- 👤 Britt Jack
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:07
CPC Classifications
B; B64; B64C; B64C29/00; B64C29/0091; B64C9/00; B64C9/38; Y; Y10; Y10S; Y10S285/00; Y10S285/92
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US513167A
Cited
US1125642A
Cited
US1836336A
Cited
US1880098A
Cited
DE703230C
Cited
US2537487A
Cited
US2590272A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-04-26 | 1963-10-26 | 1964-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-26 | 1967-10-26 | 1968-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-26 | 1971-10-26 | 1972-04-26 | $7700.00 | Window Closed / Lapsed |