US2986609A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus of synchronous recording on a number of magnetic recording sheets
Assignee: Individual
•
Filing: 1958-10-02
•
Granted: 1961-05-30
•
Expires: 1978-10-02
Abstract
No abstract record available.
Inventors
- 👤 Hoshino Yasushi
- 👤 Namikawa Mamoru
- 👤 Tochihara Shigezo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:17
CPC Classifications
G; G11; G11B; G11B25/00; G11B25/06; G09; G09B; G09B5/00; G09B5/06; G09B5/062; G11B21/00; G11B21/02; G11B21/04; G11B21/043; G11B25/04; G11B25/046; G11B5/00; G11B5/008; G11B5/00804; G11B5/00813; G11B5/00847; G11B5/0086; G11B5/00865
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) | 1964-05-29 | 1964-11-28 | 1965-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-29 | 1968-11-28 | 1969-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-29 | 1972-11-28 | 1973-05-30 | $7700.00 | Window Closed / Lapsed |