US3397855A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rear mount system for aircraft engines
Assignee: Pratt and Whitney Canada Corp
•
Filing: 1966-12-01
•
Granted: 1968-08-20
•
Expires: 1986-12-01
Abstract
No abstract record available.
Inventors
- 👤 Newland Allan Burrell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:06
CPC Classifications
B; B64; B64D; B64D27/00; B64D27/02; B64D27/16; B64D27/20; B64D27/40; B64D27/402
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2565733A
Cited
US3318554A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-08-20 | 1972-02-19 | 1972-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-08-20 | 1976-02-19 | 1976-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-08-20 | 1980-02-19 | 1980-08-20 | $7700.00 | Window Closed / Lapsed |