US2803838A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aircraft crash marking device
Assignee: Individual
•
Filing: 1954-08-26
•
Granted: 1957-08-27
•
Expires: 1974-08-26
Abstract
No abstract record available.
Inventors
- 👤 Jr Nathaniel B Wales
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:06
CPC Classifications
B; B63; B63C; B63C9/00; B63C9/21; B63B; B63B2209/00; B63B2209/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US357056A
Cited
FR632429A
Cited
US2090619A
Cited
US2192450A
Cited
US2380587A
Cited
US2402143A
Cited
US2459267A
Cited
US2687541A
Cited
US2674726A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-08-26 | 1961-02-25 | 1961-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-26 | 1965-02-25 | 1965-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-26 | 1969-02-25 | 1969-08-27 | $7700.00 | Window Closed / Lapsed |