US3015735A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flip-flop with each side cross-coupled to other side by capacitor and emitter follower in parallel
Assignee: International Business Machines Corp
•
Filing: 1957-12-23
•
Granted: 1962-01-02
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Expires: 1977-12-23
Abstract
No abstract record available.
Inventors
- 👤 Harford Henry Douglas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 04:51
CPC Classifications
H; H03; H03K; H03K3/00; H03K3/02; H03K3/26; H03K3/28; H03K3/281; H03K3/286; H03K3/287
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USRE23770E
Cited
US2719228A
Cited
US2759104A
Cited
US2835828A
Cited
US2827574A
Cited
US2825822A
Cited
US2846583A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-01-01 | 1965-07-03 | 1966-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-01-01 | 1969-07-03 | 1970-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-01-01 | 1973-07-03 | 1974-01-02 | $7700.00 | Window Closed / Lapsed |