Patent US2672573A successfully refreshed from Google Patents.
US2672573A
Expired / Lapsed
US
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Beam shift electron tube
Assignee: National Union Radio Corp
•
Filing: 1951-03-15
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Granted: 1954-03-16
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Expires: 1971-03-15
Abstract
No abstract record available.
Inventors
- 👤 Paul W Charton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 09:39
CPC Classifications
H; H01; H01J; H01J31/00; H01J31/02; H01J31/06; H01J21/00; H01J21/02; H01J21/06; H01J21/10; H01J21/12; H01J2893/00; H01J2893/0032
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) | 1957-03-15 | 1957-09-14 | 1958-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-15 | 1961-09-14 | 1962-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-15 | 1965-09-14 | 1966-03-16 | $7700.00 | Window Closed / Lapsed |