Patent US2430398A successfully refreshed from Google Patents.
US2430398A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Jet-propulsion internal-combustion turbine plant
Assignee: Armstrong Siddeley Motors Ltd
•
Filing: 1943-08-31
•
Granted: 1947-11-04
•
Expires: 1963-08-31
Abstract
No abstract record available.
Inventors
- 👤 Heppner Fritz Albert Max
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:00
CPC Classifications
F; F02; F02K; F02K3/00; F02K3/02; F02K3/04; F02C; F02C3/00; F02C3/04; F02C3/06; F02C3/073
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1950-11-03 | 1951-05-05 | 1951-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-11-03 | 1955-05-05 | 1955-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-11-03 | 1959-05-05 | 1959-11-04 | $7700.00 | Window Closed / Lapsed |