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Patent US3435255A successfully refreshed from Google Patents.
US3435255A
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Pulse controlled switch having solid state switching elements isolated from transient voltages
Assignee: Danfoss AS
•
Filing: 1965-03-09
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Granted: 1969-03-25
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Expires: 1985-03-09
Abstract
No abstract record available.
Inventors
- 👤 Arne Jensen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:19
CPC Classifications
H; H03; H03K; H03K17/00; H03K17/51; H03K17/56; H03K17/70
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3188487A
Cited
US3271591A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-03-24 | 1972-09-23 | 1973-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-24 | 1976-09-23 | 1977-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-24 | 1980-09-23 | 1981-03-25 | $7700.00 | Window Closed / Lapsed |