US2638588A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electromagnetic-radiating system
Assignee: Raytheon Co
•
Filing: 1950-10-20
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Granted: 1953-05-12
•
Expires: 1970-10-20
Abstract
No abstract record available.
Inventors
- 👤 Henry J Riblet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:11
CPC Classifications
H; H01; H01Q; H01Q1/00; H01Q1/42; H01Q1/04; H01Q15/00; H01Q15/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2120211A
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US1906545A
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US2064171A
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US2082042A
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US2283568A
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US2435988A
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US2530580A
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US2525861A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-05-11 | 1956-11-10 | 1957-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-05-11 | 1960-11-10 | 1961-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-05-11 | 1964-11-10 | 1965-05-12 | $7700.00 | Window Closed / Lapsed |