US2444418A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High-frequency electronic device
Assignee: General Electric Co
•
Filing: 1942-10-15
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Granted: 1948-07-06
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Expires: 1962-10-15
Abstract
No abstract record available.
Inventors
- 👤 Ralph J Bondley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:35
CPC Classifications
H; H01; H01J; H01J25/00; H01J25/50; H01J25/52; H01J25/58; H01J25/587; H01J23/00; H01J23/16; H01J23/18; H01J23/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB445084A
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US2063342A
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US2128237A
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US2163589A
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US2167201A
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US2147159A
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US2187149A
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US2244747A
Cited
US2348986A
Cited
US2408235A
Cited
US2408903A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-07-06 | 1952-01-05 | 1952-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-07-06 | 1956-01-05 | 1956-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-07-06 | 1960-01-05 | 1960-07-06 | $7700.00 | Window Closed / Lapsed |