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US2815488A
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Non-linear capacitance or inductance switching, amplifying, and memory organs
Assignee: International Business Machines Corp
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Filing: 1954-04-28
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Granted: 1957-12-03
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Expires: 1974-04-28
Abstract
No abstract record available.
Inventors
- 👤 Neumann John Von
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:11
CPC Classifications
G; G06; G06F; G06F7/00; G06F7/38; G06F7/388; G11; G11C; G11C11/00; G11C11/19; G11C11/20; G11C19/00; G11C19/12; H; H03; H03K; H03K19/00; H03K19/02; H03K19/16; H03K19/162; H03K3/00; H03K3/02; H03K3/45; H03K3/47
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2514678A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-12-02 | 1961-06-03 | 1961-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-12-02 | 1965-06-03 | 1965-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-12-02 | 1969-06-03 | 1969-12-03 | $7700.00 | Window Closed / Lapsed |