Patent US2870347A successfully refreshed from Google Patents.
US2870347A
Expired / Lapsed
US
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Bistable transistor circuit
Assignee: Monroe Calculating Machine Co
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Filing: 1956-09-24
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Granted: 1959-01-20
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Expires: 1976-09-24
Abstract
No abstract record available.
Inventors
- 👤 Jensen Alan Kimble
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:07
CPC Classifications
H; H03; H03K; H03K3/00; H03K3/02; H03K3/26; H03K17/00; H03K17/51; H03K17/74; H03K5/00; H03K5/13; H03K5/135
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-01-19 | 1962-07-21 | 1963-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-19 | 1966-07-21 | 1967-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-19 | 1970-07-21 | 1971-01-20 | $7700.00 | Window Closed / Lapsed |