US2433290A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Two-way radio communication system
Assignee: RCA Corp
•
Filing: 1945-03-23
•
Granted: 1947-12-23
•
Expires: 1965-03-23
Abstract
No abstract record available.
Inventors
- 👤 John C E Mitchell
- 👤 William B Morrison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:38
CPC Classifications
H; H04; H04B; H04B1/00; H04B1/38; H04B1/40; H04B1/54
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2113419A
Cited
GB486448A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-12-22 | 1951-06-23 | 1951-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-12-22 | 1955-06-23 | 1955-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-12-22 | 1959-06-23 | 1959-12-23 | $7700.00 | Window Closed / Lapsed |