US3051850A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transistor multivibrator circuit with variable impedance operation stabilizing means
Assignee: AT&T Inc
•
Filing: 1958-10-02
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Granted: 1962-08-28
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Expires: 1978-10-02
Abstract
No abstract record available.
Inventors
- 👤 Jr George F Abbott
- 👤 Frederick D Padden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:59
CPC Classifications
H; H03; H03K; H03K3/00; H03K3/02; H03K3/26; H03K3/28; H03K3/281; H03K3/282; H03K3/2826; H03K3/2828
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2655609A
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US2751545A
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US2827574A
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US2776382A
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US2840727A
Cited
US2930905A
Cited
US2935698A
Cited
US2935572A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-08-27 | 1966-02-26 | 1966-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-08-27 | 1970-02-26 | 1970-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-08-27 | 1974-02-26 | 1974-08-28 | $7700.00 | Window Closed / Lapsed |