US2964652A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transistor switching circuits
Assignee: International Business Machines Corp
•
Filing: 1956-11-15
•
Granted: 1960-12-13
•
Expires: 1976-11-15
Abstract
No abstract record available.
Inventors
- 👤 Hannon S Yourke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:23
CPC Classifications
H; H03; H03K; H03K19/00; H03K19/02; H03K19/08; H03K19/082; H03K19/086
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2535377A
Cited
US2597796A
Cited
US2535303A
Cited
US2730632A
Cited
US2641717A
Cited
US2710348A
Cited
US2882423A
Cited
US2825821A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-12-13 | 1964-06-13 | 1964-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-13 | 1968-06-13 | 1968-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-13 | 1972-06-13 | 1972-12-13 | $7700.00 | Window Closed / Lapsed |