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US2775722A
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Electric discharge tubes
Assignee: International Standard Electric Corp
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Filing: 1953-04-08
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Granted: 1956-12-25
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Expires: 1973-04-08
Abstract
No abstract record available.
Inventors
- 👤 Beck Arnold Hugh William
- 👤 Jackson Thomas Meirion
- 👤 Lytollis John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:56
CPC Classifications
H; H01; H01J; H01J17/00; H01J17/38; H01J17/48; H03; H03K; H03K17/00; H03K17/51; H03K17/52; H03K29/00; H04; H04Q; H04Q3/00; H04Q3/42; H04Q3/52; H04Q3/521; H04Q3/525
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1738169A
Cited
US1834072A
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US2103022A
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US2293570A
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US2309525A
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US2294910A
Cited
US2593375A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-12-25 | 1960-06-25 | 1960-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-25 | 1964-06-25 | 1964-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-25 | 1968-06-25 | 1968-12-25 | $7700.00 | Window Closed / Lapsed |