US2099787A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radio broadcasting system
Assignee: RCA Corp
•
Filing: 1933-12-18
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Granted: 1937-11-23
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Expires: 1953-12-18
Abstract
No abstract record available.
Inventors
- 👤 Wright Ellen Ilamilton Clegg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:19
CPC Classifications
H; H04; H04H; H04H20/00; H04H20/02; H04H20/06; H04H20/10; H04H60/00; H04H60/02; H04H60/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1940-11-22 | 1941-05-24 | 1941-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1944-11-22 | 1945-05-24 | 1945-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1948-11-22 | 1949-05-24 | 1949-11-23 | $7700.00 | Window Closed / Lapsed |