Patent US3065461A successfully refreshed from Google Patents.
US3065461A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic recording apparatus
Assignee: International Business Machines Corp
•
Filing: 1958-06-30
•
Granted: 1962-11-20
•
Expires: 1978-06-30
Abstract
No abstract record available.
Inventors
- 👤 Aronis William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:10
CPC Classifications
G; G11; G11B; G11B20/00; G11B20/10; G11B20/16
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2850720A
Cited
US2771595A
Cited
US2759171A
Cited
US2648829A
Cited
US2780670A
Cited
US2721990A
Cited
US2789218A
Cited
US2696599A
Cited
US2685682A
Cited
US2890440A
Cited
US2907005A
Cited
US2807003A
Cited
US2923922A
Cited
US2824776A
Cited
US2895123A
Cited
US2857585A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-11-19 | 1966-05-21 | 1966-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-11-19 | 1970-05-21 | 1970-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-11-19 | 1974-05-21 | 1974-11-20 | $7700.00 | Window Closed / Lapsed |