US3201526A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic adjustment of magnetic head spacing
Assignee: US Philips Corp
•
Filing: 1960-11-23
•
Granted: 1965-08-17
•
Expires: 1980-11-23
Abstract
No abstract record available.
Inventors
- 👤 Wessels Johannes Hendrik
- 👤 Koorneef Jacob
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:06
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/62; G11B5/48
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2787750A
Cited
US2708693A
Cited
US2972660A
Cited
GB758865A
Cited
US2950354A
Cited
US2982822A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-16 | 1969-02-15 | 1969-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-16 | 1973-02-15 | 1973-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-16 | 1977-02-15 | 1977-08-17 | $7700.00 | Window Closed / Lapsed |