Patent US4321057A successfully refreshed from Google Patents.
US2433379A
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Generation of electrical impulses
Assignee: STC PLC
•
Filing: 1942-09-11
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Granted: 1947-12-30
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Expires: 1962-09-11
Abstract
No abstract record available.
Inventors
- 👤 Levy Maurice Moise
- 👤 Weaver Leslie Ernest
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:54
CPC Classifications
H; H03; H03K; H03K5/00; H03K5/01; H03K5/04; H03K5/06; H03K5/065
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2265996A
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US2200009A
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US2212420A
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US2266154A
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US2310692A
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US2236985A
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US2221666A
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US2246534A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-12-29 | 1951-06-30 | 1951-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-12-29 | 1955-06-30 | 1955-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-12-29 | 1959-06-30 | 1959-12-30 | $7700.00 | Window Closed / Lapsed |