US2952789A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electron tube and socket
Assignee: Varian Medical Systems Inc
•
Filing: 1955-03-08
•
Granted: 1960-09-13
•
Expires: 1975-03-08
Abstract
No abstract record available.
Inventors
- 👤 Jack A Mccullough
- 👤 George F Wunderlich
- 👤 Paul D Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 01:39
CPC Classifications
H; H01; H01R; H01R33/00; H01R33/74; H01J; H01J19/00; H01J19/28; H01J19/32; H01J19/34; H01J5/00; H01J5/32; H01J5/44; H01J5/48; H01J2893/00; H01J2893/0001; H01J2893/0002; H01J2893/0003
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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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) | 1963-09-13 | 1964-03-14 | 1964-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-13 | 1968-03-14 | 1968-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-13 | 1972-03-14 | 1972-09-13 | $7700.00 | Window Closed / Lapsed |