US2784345A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electron-discharge devices
Assignee: Raytheon Co
•
Filing: 1951-06-26
•
Granted: 1957-03-05
•
Expires: 1971-06-26
Abstract
No abstract record available.
Inventors
- 👤 Percy L Spencer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 06:51
CPC Classifications
H; H03; H03C; H03C1/00; H03C1/28; H03C1/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2013093A
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US1957327A
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US2432608A
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US2409038A
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US2408903A
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US2508280A
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US2449794A
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US2538087A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-03-04 | 1960-09-03 | 1961-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-03-04 | 1964-09-03 | 1965-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-03-04 | 1968-09-03 | 1969-03-05 | $7700.00 | Window Closed / Lapsed |