Patent US2623199A successfully refreshed from Google Patents.
US2623199A
Expired / Lapsed
US
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Gas-filled discharge tube circuits
Assignee: International Standard Electric Corp
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Filing: 1951-02-08
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Granted: 1952-12-23
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Expires: 1971-02-08
Abstract
No abstract record available.
Inventors
- 👤 Ridler Desmond Sydney
- 👤 Weir Donald Adams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:17
CPC Classifications
H; H03; H03K; H03K29/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2524213A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-12-23 | 1956-06-23 | 1956-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-23 | 1960-06-23 | 1960-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-23 | 1964-06-23 | 1964-12-23 | $7700.00 | Window Closed / Lapsed |