Patent US3028516A successfully refreshed from Google Patents.
US3028516A
Expired / Lapsed
US
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Electron tube and socket therefor
Assignee: Varian Medical Systems Inc
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Filing: 1959-02-13
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Granted: 1962-04-03
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Expires: 1979-02-13
Abstract
No abstract record available.
Inventors
- 👤 Willis B Foote
- 👤 Jr Jackson W Kendall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:48
CPC Classifications
H; H01; H01R; H01R33/00; H01R33/74; H01J; H01J21/00; H01J21/02; H01J21/06; H01J21/065
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2489872A
Cited
US2621310A
Cited
US2582684A
Cited
US2647218A
Cited
US2814750A
Cited
US2859372A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-04-02 | 1965-10-02 | 1966-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-04-02 | 1969-10-02 | 1970-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-04-02 | 1973-10-02 | 1974-04-03 | $7700.00 | Window Closed / Lapsed |