US2492969A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Night and all-weather ground trainer
Assignee: Individual
•
Filing: 1946-07-03
•
Granted: 1950-01-03
•
Expires: 1966-07-03
Abstract
No abstract record available.
Inventors
- 👤 Carl J Crane
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:31
CPC Classifications
G; G09; G09B; G09B9/00; G09B9/02; G09B9/08; G09B9/30; G09B9/32
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US635043A
Cited
US1281720A
Cited
US2105008A
Cited
US2306429A
Cited
US2409938A
Cited
US2331303A
Cited
US2392781A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-01-02 | 1953-07-04 | 1954-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-01-02 | 1957-07-04 | 1958-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-01-02 | 1961-07-04 | 1962-01-03 | $7700.00 | Window Closed / Lapsed |