US2910607A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ceramic type electron tube
Assignee: Varian Medical Systems Inc
•
Filing: 1955-02-04
•
Granted: 1959-10-27
•
Expires: 1975-02-04
Abstract
No abstract record available.
Inventors
- 👤 Jack A Mccullough
- 👤 Paul D Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:53
CPC Classifications
H; H01; H01M; H01M10/00; H01M10/34; F; F16; F16K; F16K15/00; F16K15/14; F16K15/148; F21; F21L; F21L14/00; F21V; F21V17/00; G; G05; G05D; G05D7/00; G05D7/01; G05D7/0106; G05D7/012; H01J; H01J21/00; H01J21/02; H01J21/36; H01M50/00; H01M50/20; H01M50/204; H01M50/207; H01M50/213; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 0
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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) | 1962-10-26 | 1963-04-27 | 1963-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-26 | 1967-04-27 | 1967-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-26 | 1971-04-27 | 1971-10-27 | $7700.00 | Window Closed / Lapsed |