Patent US3066197A successfully refreshed from Google Patents.
US3066197A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Boundary-displacement magnetic recording and reproducing system
Assignee: Sony Corp
•
Filing: 1959-09-25
•
Granted: 1962-11-27
•
Expires: 1979-09-25
Abstract
No abstract record available.
Inventors
- 👤 Uemura Saburo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:47
CPC Classifications
G; G11; G11B; G11B11/00; G11B11/10; G11B5/00; G11B5/02; G11B5/027; G11B5/0275; G11B5/48; G11B5/49; G11B5/4907
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1886616A
Cited
US2632061A
Cited
US2632815A
Cited
US2743320A
Cited
US2816175A
Cited
DE1026974B
Cited
US3013124A
Cited
US2995632A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-11-26 | 1966-05-28 | 1966-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-11-26 | 1970-05-28 | 1970-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-11-26 | 1974-05-28 | 1974-11-27 | $7700.00 | Window Closed / Lapsed |