US2508853A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radio relaying
Assignee: RCA Corp
•
Filing: 1945-04-12
•
Granted: 1950-05-23
•
Expires: 1965-04-12
Abstract
No abstract record available.
Inventors
- 👤 Donald S Bond
- 👤 Leland E Thompson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:46
CPC Classifications
H; H04; H04H; H04H20/00; H04H20/02; H04H20/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1568938A
Cited
US1635153A
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US1918262A
Cited
US2140730A
Cited
US2155821A
Cited
US2283575A
Cited
US2148532A
Cited
US2284415A
Cited
US2358382A
Cited
US2458124A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-05-22 | 1953-11-21 | 1954-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-05-22 | 1957-11-21 | 1958-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-05-22 | 1961-11-21 | 1962-05-23 | $7700.00 | Window Closed / Lapsed |