US3389217A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic tape recording and reproducing apparatus
Assignee: Sony Corp
•
Filing: 1964-12-28
•
Granted: 1968-06-18
•
Expires: 1984-12-28
Abstract
No abstract record available.
Inventors
- 👤 Nobutoshi Kihara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:48
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/18; G11B15/1808; G11B27/00; G11B27/36; G11B5/00; G11B5/48; G11B5/52; G11B5/53; H; H04; H04N; H04N5/00; H04N5/76; H04N5/78; H04N5/782; H04N5/783
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3255307A
Cited
US3328521A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-06-18 | 1971-12-18 | 1972-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-06-18 | 1975-12-18 | 1976-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-06-18 | 1979-12-18 | 1980-06-18 | $7700.00 | Window Closed / Lapsed |