US2475848A
Expired / Lapsed
US
⏱️ 0.0 years remaining
System for automatic transmission of messages between flight progress boards and aircraft
Assignee: Teleregister Corp
•
Filing: 1945-08-04
•
Granted: 1949-07-12
•
Expires: 1965-08-04
Abstract
No abstract record available.
Inventors
- 👤 Harold F May
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:09
CPC Classifications
G; G08; G08G; G08G5/00; G08G5/20; G08G5/26; G08G5/21; G08G5/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1973096A
Cited
US1894019A
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US2082550A
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US2171293A
Cited
US2177400A
Cited
US2252083A
Cited
US2246449A
Cited
US2386743A
Cited
US2399738A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-07-11 | 1953-01-10 | 1953-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-07-11 | 1957-01-10 | 1957-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-07-11 | 1961-01-10 | 1961-07-12 | $7700.00 | Window Closed / Lapsed |