US2599643A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radio transmission system
Assignee: RCA Corp
•
Filing: 1949-01-24
•
Granted: 1952-06-10
•
Expires: 1969-01-24
Abstract
No abstract record available.
Inventors
- 👤 Ray D Kell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:51
CPC Classifications
H; H04; H04H; H04H20/00; H04H20/65; H04H20/67
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB288714A
Cited
US1926169A
Cited
FR735055A
Cited
US2085424A
Cited
US2125977A
Cited
US2190037A
Cited
US2218636A
Cited
US2314707A
Cited
US2449174A
Cited
US2404568A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-06-10 | 1955-12-10 | 1956-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-06-10 | 1959-12-10 | 1960-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-06-10 | 1963-12-10 | 1964-06-10 | $7700.00 | Window Closed / Lapsed |