US3248713A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for the transfer of information between magnetic elements
Assignee: International Business Machines Corp
•
Filing: 1961-08-30
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Granted: 1966-04-26
•
Expires: 1981-08-30
Abstract
No abstract record available.
Inventors
- 👤 Middelhoek Simon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 04:53
CPC Classifications
G; G11; G11C; G11C19/00; G11C19/02; G11C19/08; G11C19/0808; G11C19/0825
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2919432A
Cited
US3068453A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-04-25 | 1969-10-25 | 1970-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-25 | 1973-10-25 | 1974-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-25 | 1977-10-25 | 1978-04-26 | $7700.00 | Window Closed / Lapsed |