Patent US3042756A successfully refreshed from Google Patents.
US3042756A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotatable magnetic transducer
Assignee: International Business Machines Corp
•
Filing: 1956-12-21
•
Granted: 1962-07-03
•
Expires: 1976-12-21
Abstract
No abstract record available.
Inventors
- 👤 Walter S Buslik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:41
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/48; G11B5/52; G11B5/53; G11B5/127; G11B5/17
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US586825A
Cited
US2193531A
Cited
US2245286A
Cited
US2648589A
Cited
US2773120A
Cited
DE935937C
Cited
US2909616A
Cited
FR1107292A
Cited
US2854525A
Cited
US2919314A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-07-02 | 1966-01-01 | 1966-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-02 | 1970-01-01 | 1970-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-02 | 1974-01-01 | 1974-07-03 | $7700.00 | Window Closed / Lapsed |