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US3443244A
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Coaxial resonator structure for solid-state negative resistance devices
Assignee: Varian Medical Systems Inc
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Filing: 1967-08-23
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Granted: 1969-05-06
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Expires: 1987-08-23
Abstract
No abstract record available.
Inventors
- 👤 Edward J Cook
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:21
CPC Classifications
H; H01; H01P; H01P7/00; H01P7/04; H01P7/06; H03; H03B; H03B9/00; H03B9/12; H03B9/14; H03B9/145
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-05-05 | 1972-11-04 | 1973-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-05-05 | 1976-11-04 | 1977-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-05-05 | 1980-11-04 | 1981-05-06 | $7700.00 | Window Closed / Lapsed |