Patent US3299372A successfully refreshed from Google Patents.
US3299372A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Isolator-modulator
Assignee: NEC Corp
•
Filing: 1964-02-26
•
Granted: 1967-01-17
•
Expires: 1984-02-26
Abstract
No abstract record available.
Inventors
- 👤 Saeki Akio
- 👤 Horiguchi Yutaka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:24
CPC Classifications
H; H01; H01P; H01P1/00; H01P1/10; H01P1/15; H03; H03C; H03C7/00; H03C7/02; H03C7/025; H03C7/027
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2769960A
Cited
GB891650A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-01-16 | 1970-07-18 | 1971-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-16 | 1974-07-18 | 1975-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-16 | 1978-07-18 | 1979-01-17 | $7700.00 | Window Closed / Lapsed |