US2659818A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High-frequency directed radio energy system
Assignee: Raytheon Co
•
Filing: 1950-07-21
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Granted: 1953-11-17
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Expires: 1970-07-21
Abstract
No abstract record available.
Inventors
- 👤 Bradford M Torrey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:47
CPC Classifications
H; H01; H01Q; H01Q3/00; H01Q3/12; H01Q3/14; G; G01; G01S; G01S1/00; G01S1/02; H01Q1/00; H01Q1/27; H01Q1/28; H01Q1/281; Y; Y10; Y10T; Y10T74/00; Y10T74/20; Y10T74/20012; Y10T74/20201
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1955603A
Cited
US2276104A
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US2399954A
Cited
US2540121A
Cited
US2442951A
Cited
US2501479A
Cited
US2547416A
Cited
US2518843A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-16 | 1957-05-18 | 1957-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-16 | 1961-05-18 | 1961-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-16 | 1965-05-18 | 1965-11-17 | $7700.00 | Window Closed / Lapsed |