US2593067A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High-frequency apparatus
Assignee: Raytheon Co
•
Filing: 1947-02-13
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Granted: 1952-04-15
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Expires: 1967-02-13
Abstract
No abstract record available.
Inventors
- 👤 Percy L Spencer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:42
CPC Classifications
H; H05; H05B; H05B6/00; H05B6/64; H05B6/6402; H05B2206/00; H05B2206/04; H05B2206/044
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2250308A
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US2337184A
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US2402397A
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US2341120A
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US2381323A
Cited
US2474938A
Cited
US2495429A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-04-15 | 1955-10-15 | 1956-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-15 | 1959-10-15 | 1960-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-15 | 1963-10-15 | 1964-04-15 | $7700.00 | Window Closed / Lapsed |