US2473827A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic discharge device of the cavity resonator type
Assignee: Raytheon Co
•
Filing: 1943-10-05
•
Granted: 1949-06-21
•
Expires: 1963-10-05
Abstract
No abstract record available.
Inventors
- 👤 Percy L Spencer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:00
CPC Classifications
H; H01; H01J; H01J25/00; H01J25/74
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2167201A
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US2298949A
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US2309966A
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US2263184A
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US2283895A
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US2353742A
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US2394397A
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US2400753A
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US2413171A
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US2415962A
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US2407974A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-06-20 | 1952-12-20 | 1953-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-06-20 | 1956-12-20 | 1957-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-06-20 | 1960-12-20 | 1961-06-21 | $7700.00 | Window Closed / Lapsed |