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US3445823A
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Memory having a multi-valved impedance element
Assignee: Danfoss AS
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Filing: 1965-02-04
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Granted: 1969-05-20
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Expires: 1985-02-04
Abstract
No abstract record available.
Inventors
- 👤 Bent Scharoe Petersen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 04:24
CPC Classifications
G; G11; G11C; G11C17/00; G11C17/14; G11C17/16; G11C11/00; G11C11/21; G11C11/34; G11C11/39; G11C11/56; G11C11/5678; G11C13/00; G11C13/0002; G11C13/0004; G11C27/00; G11C27/02; G11C8/00; G11C8/04; G11C2213/00; G11C2213/70; G11C2213/72
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2784389A
Cited
US2938194A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-05-19 | 1972-11-18 | 1973-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-05-19 | 1976-11-18 | 1977-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-05-19 | 1980-11-18 | 1981-05-20 | $7700.00 | Window Closed / Lapsed |