US3414831A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cascaded connected transistorized operational amplifier
Assignee: International Business Machines Corp
•
Filing: 1965-10-06
•
Granted: 1968-12-03
•
Expires: 1985-10-06
Abstract
No abstract record available.
Inventors
- 👤 Melvin G Wilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 01:01
CPC Classifications
H; H03; H03F; H03F3/00; H03F3/45; H03F3/45071; H03F3/45076; H03F3/4508; H03F3/45085; H03F1/00; H03F1/08; H03F1/083; H03F1/30; H03F3/45098; H03F2203/00; H03F2203/45; H03F2203/45264; H03F2203/45316; H03F2203/45386; H03F2203/45392; H03F2203/45464; H03F2203/45526; H03F2203/45594
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1971-12-03 | 1972-06-03 | 1972-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-03 | 1976-06-03 | 1976-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-03 | 1980-06-03 | 1980-12-03 | $7700.00 | Window Closed / Lapsed |