US2492404A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Construction of ultra high frequency broad-band antennas
Assignee: RCA Corp
•
Filing: 1945-11-10
•
Granted: 1949-12-27
•
Expires: 1965-11-10
Abstract
No abstract record available.
Inventors
- 👤 Streib Albrecht
- 👤 Thorne Earle Dayton
- 👤 Robert S Wehner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:52
CPC Classifications
H; H01; H01Q; H01Q9/00; H01Q9/04; H01Q9/16; H01Q9/28; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49016
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2033633A
Cited
US2091839A
Cited
US2205874A
Cited
US2311472A
Cited
US2321454A
Cited
US2403252A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-12-26 | 1953-06-27 | 1953-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-12-26 | 1957-06-27 | 1957-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-12-26 | 1961-06-27 | 1961-12-27 | $7700.00 | Window Closed / Lapsed |