Patent US2720646A successfully refreshed from Google Patents.
US2720646A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sweep system for cathode ray tube
Assignee: Individual
•
Filing: 1945-11-13
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Granted: 1955-10-11
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Expires: 1965-11-13
Abstract
No abstract record available.
Inventors
- 👤 France B Berger
- 👤 Jarmotz Paul
- 👤 Leland J Haworth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 06:38
CPC Classifications
G; G01; G01S; G01S7/00; G01S7/02; G01S7/04; G01S7/06; G01S7/10; G01S7/12; H; H04; H04N; H04N17/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-10-10 | 1959-04-11 | 1959-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-10-10 | 1963-04-11 | 1963-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-10-10 | 1967-04-11 | 1967-10-11 | $7700.00 | Window Closed / Lapsed |