US2573335A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Airplane crash switch
Assignee: Individual
•
Filing: 1948-03-26
•
Granted: 1951-10-30
•
Expires: 1968-03-26
Abstract
No abstract record available.
Inventors
- 👤 Robert H Hodgins
- 👤 Clifford J Mcgillivray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 08:12
CPC Classifications
A; A62; A62C; A62C3/00; A62C3/07; A62C3/08
Claims Analysis
Total Claims: 0
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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) | 1954-10-29 | 1955-04-30 | 1955-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-10-29 | 1959-04-30 | 1959-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-10-29 | 1963-04-30 | 1963-10-30 | $7700.00 | Window Closed / Lapsed |