US2695477A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of manufacturing cathode-ray tubes
Assignee: Hartford National Bank and Trust Co
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Filing: 1950-10-21
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Granted: 1954-11-30
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Expires: 1970-10-21
Abstract
No abstract record available.
Inventors
- 👤 Otto Louis Van Steenis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 01:56
CPC Classifications
C; C03; C03B; C03B23/00; C03B23/20; C03B23/207; C03B23/217; C03C; C03C27/00; H; H01; H01J; H01J29/00; H01J29/86; H01J29/87; H01J5/00; H01J5/20; H01J5/22; H01J5/24; H01J2893/00; H01J2893/0033; H01J2893/0037; H01J2893/0038; H01J2893/0039
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2160434A
Cited
US2215644A
Cited
GB536858A
Cited
US2236708A
Cited
US2334123A
Cited
US2389360A
Cited
US2581945A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-11-29 | 1958-05-31 | 1958-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-11-29 | 1962-05-31 | 1962-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-11-29 | 1966-05-31 | 1966-11-30 | $7700.00 | Window Closed / Lapsed |