US3370128A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combination frequency and time-division wireless multiplex system
Assignee: NEC Corp
•
Filing: 1964-07-22
•
Granted: 1968-02-20
•
Expires: 1984-07-22
Abstract
No abstract record available.
Inventors
- 👤 Morita Masasuke
- 👤 Hukami Tadasu
- 👤 Miyagi Masahisa
- 👤 Ito Sukehiro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:24
CPC Classifications
H; H04; H04B; H04B1/00; H04B1/66; H04J; H04J3/00; H04J4/00
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-02-19 | 1971-08-21 | 1972-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-02-19 | 1975-08-21 | 1976-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-02-19 | 1979-08-21 | 1980-02-20 | $7700.00 | Window Closed / Lapsed |