Patent US3213711A successfully refreshed from Google Patents.
US2594773A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Terminal equipment for aircraft
Assignee: Individual
•
Filing: 1945-11-02
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Granted: 1952-04-29
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Expires: 1965-11-02
Abstract
No abstract record available.
Inventors
- 👤 Michael S Lobenthal
- 👤 Bloch Monroe Percy
- 👤 Florence B Downs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:35
CPC Classifications
B; B64; B64F; B64F1/00; B64F1/22; B64F1/221
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US242077A
Cited
US287156A
Cited
GB191222772A
Cited
GB191324433A
Cited
US1267956A
Cited
US1751639A
Cited
GB450265A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-04-29 | 1955-10-29 | 1956-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-29 | 1959-10-29 | 1960-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-29 | 1963-10-29 | 1964-04-29 | $7700.00 | Window Closed / Lapsed |