Patent US2920247A successfully refreshed from Google Patents.
US2920247A
Expired / Lapsed
US
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Stable multivibrator
Assignee: Motors Liquidation Co
•
Filing: 1955-08-12
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Granted: 1960-01-05
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Expires: 1975-08-12
Abstract
No abstract record available.
Inventors
- 👤 Andrew J Fisher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:26
CPC Classifications
H; H03; H03K; H03K3/00; H03K3/02; H03K3/04; H03K3/05; H03K3/06; H03K3/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB528806A
Cited
GB535778A
Cited
US2312127A
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US2280978A
Cited
US2405237A
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US2375456A
Cited
US2476389A
Cited
US2461871A
Cited
US2741725A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-01-04 | 1963-07-06 | 1964-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-01-04 | 1967-07-06 | 1968-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-01-04 | 1971-07-06 | 1972-01-05 | $7700.00 | Window Closed / Lapsed |