US3400295A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Matched transmission line coupling for electron discharge tube
Assignee: Raytheon Co
•
Filing: 1964-11-17
•
Granted: 1968-09-03
•
Expires: 1984-11-17
Abstract
No abstract record available.
Inventors
- 👤 Harry F Chapell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:22
CPC Classifications
H; H01; H01J; H01J23/00; H01J23/005; H01J23/16; H01J23/24; H01J23/26; H01J23/36; H01J23/40; H01J23/48; H01J23/50; H01J25/00; H01J25/34; H01J25/42; H01J25/44
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2584802A
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US2786959A
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US2833955A
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US2938175A
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US2922067A
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US2934671A
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US3090016A
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US3309556A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-09-03 | 1972-03-04 | 1972-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-09-03 | 1976-03-04 | 1976-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-09-03 | 1980-03-04 | 1980-09-03 | $7700.00 | Window Closed / Lapsed |