Patent US2471892A successfully refreshed from Google Patents.
US2471892A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reactive propulsion power plant having radial flow compressor and turbine means
Assignee: Lockheed Martin Corp
•
Filing: 1944-02-14
•
Granted: 1949-05-31
•
Expires: 1964-02-14
Abstract
No abstract record available.
Inventors
- 👤 Nathan C Price
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:05
CPC Classifications
F; F02; F02C; F02C3/00; F02C3/04; F02C3/08; F02C3/085; Y; Y02; Y02T; Y02T50/00; Y02T50/60
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US643938A
Cited
US715441A
Cited
US693946A
Cited
FR346865A
Cited
US879059A
Cited
US862017A
Cited
US911662A
Cited
US953241A
Cited
FR411473A
Cited
US1091581A
Cited
US1055308A
Cited
US1197755A
Cited
US1213889A
Cited
US1076865A
Cited
US1257167A
Cited
US1433950A
Cited
US1331313A
Cited
US1363315A
Cited
US1462592A
Cited
US2280835A
Cited
US2228425A
Cited
US2320391A
Cited
US2268929A
Cited
US2318990A
Cited
US2357778A
Cited
US2391770A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-05-30 | 1952-11-29 | 1953-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-05-30 | 1956-11-29 | 1957-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-05-30 | 1960-11-29 | 1961-05-31 | $7700.00 | Window Closed / Lapsed |