US2442951A
Expired / Lapsed
US
⏱️ 0.0 years remaining
System for focusing and for directing radio-frequency energy
Assignee: RCA Corp
•
Filing: 1944-05-27
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Granted: 1948-06-08
•
Expires: 1964-05-27
Abstract
No abstract record available.
Inventors
- 👤 Harley A Iams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 17:53
CPC Classifications
G; G01; G01S; G01S1/00; G01S1/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1806755A
Cited
US1277562A
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US1821386A
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US2044807A
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US2129669A
Cited
US2409183A
Cited
US2419205A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-06-08 | 1951-12-08 | 1952-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-06-08 | 1955-12-08 | 1956-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-06-08 | 1959-12-08 | 1960-06-08 | $7700.00 | Window Closed / Lapsed |