US3043918A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic head and method of operation
Assignee: Leica Microsystems Inc
•
Filing: 1956-08-10
•
Granted: 1962-07-10
•
Expires: 1976-08-10
Abstract
No abstract record available.
Inventors
- 👤 Fawcett Howard Norris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:52
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/10; G11B5/11
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2708694A
Cited
US2555110A
Cited
US2584984A
Cited
US2633504A
Cited
US2678970A
Cited
US2813932A
Cited
US2767253A
Cited
US2697135A
Cited
US2926220A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-07-09 | 1966-01-08 | 1966-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-09 | 1970-01-08 | 1970-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-09 | 1974-01-08 | 1974-07-10 | $7700.00 | Window Closed / Lapsed |