US2498995A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for testing engines
Assignee: Power Jets Research and Development Ltd
•
Filing: 1945-03-14
•
Granted: 1950-02-28
•
Expires: 1965-03-14
Abstract
No abstract record available.
Inventors
- 👤 Manning Edgar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:12
CPC Classifications
G; G01; G01M; G01M15/00; G01M15/02
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
GB124773A
Cited
GB116045A
Cited
US1560435A
Cited
GB259924A
Cited
US2019755A
Cited
US2095142A
Cited
US2362308A
Cited
US2387148A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-02-27 | 1953-08-29 | 1954-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-02-27 | 1957-08-29 | 1958-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-02-27 | 1961-08-29 | 1962-02-28 | $7700.00 | Window Closed / Lapsed |