US3054430A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Grid structure for electron discharge tubes
Assignee: US Philips Corp
•
Filing: 1957-05-29
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Granted: 1962-09-18
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Expires: 1977-05-29
Abstract
No abstract record available.
Inventors
- 👤 Hendrikus Johannes Marie V Tol
- 👤 Dulk Ernst Sigmund Den
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:51
CPC Classifications
H; H01; H01J; H01J19/00; H01J19/28; H01J19/38; H01J2893/00; H01J2893/0001; H01J2893/0012; H01J2893/0015; H01J2893/0016
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2371780A
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US2171225A
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US2443914A
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US2507709A
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US2759499A
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US2549551A
Cited
US2648797A
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US2751662A
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FR1082995A
Cited
US2790228A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-09-17 | 1966-03-19 | 1966-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-09-17 | 1970-03-19 | 1970-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-09-17 | 1974-03-19 | 1974-09-18 | $7700.00 | Window Closed / Lapsed |