US3381223A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transmission system for use in a subscription radio communcation system
Assignee: Panasonic Holdings Corp
•
Filing: 1965-11-15
•
Granted: 1968-04-30
•
Expires: 1985-11-15
Abstract
No abstract record available.
Inventors
- 👤 Nakamura Shoichi
- 👤 Mori Eizo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:12
CPC Classifications
H; H04; H04H; H04H60/00; H04H60/09; H04H60/14; H04H60/16; H04H20/00; H04H20/44; H04H20/46; H04H20/47; H04H20/48; H04H20/28; H04H20/33; H04H20/34
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) | 1971-04-30 | 1971-10-30 | 1972-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-30 | 1975-10-30 | 1976-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-30 | 1979-10-30 | 1980-04-30 | $7700.00 | Window Closed / Lapsed |