US2593034A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Supporting structure for electron discharge devices
Assignee: Zenith Electronics LLC
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Filing: 1949-10-28
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Granted: 1952-04-15
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Expires: 1969-10-28
Abstract
No abstract record available.
Inventors
- 👤 Kafka Nicholas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:47
CPC Classifications
H; H04; H04N; H04N3/00; H04N3/10; H04N3/16; H04N3/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR573514A
Cited
US1526353A
Cited
GB228014A
Cited
US1683202A
Cited
US1825534A
Cited
DE539410C
Cited
US2462489A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-04-15 | 1955-10-15 | 1956-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-15 | 1959-10-15 | 1960-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-15 | 1963-10-15 | 1964-04-15 | $7700.00 | Window Closed / Lapsed |