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US3501646A
Expired / Lapsed
US
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Multiple-stage high-voltage impulse generators having a series array of spark gaps in each stage
Assignee: Ferranti International PLC
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Filing: 1967-10-03
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Granted: 1970-03-17
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Expires: 1987-10-03
Abstract
No abstract record available.
Inventors
- 👤 Malcolm John Bishop
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 03:59
CPC Classifications
H; H03; H03K; H03K3/00; H03K3/02; H03K3/53; H03K3/537
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2221573A
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US2419574A
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US2605310A
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US2524240A
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US3073973A
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US3257637A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-03-16 | 1973-09-15 | 1974-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-16 | 1977-09-15 | 1978-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-16 | 1981-09-15 | 1982-03-17 | $7700.00 | Window Closed / Lapsed |