US3538779A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manual and automatic magnetic head moving mechanism in magnetic recording and reproducing apparatus of movable head type
Assignee: Panasonic Holdings Corp
•
Filing: 1967-08-28
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Granted: 1970-11-10
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Expires: 1987-08-28
Abstract
No abstract record available.
Inventors
- 👤 Kozo Yamamoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:51
CPC Classifications
G; G11; G11B; G11B21/00; G11B21/02; G11B21/08; Y; Y10; Y10T; Y10T74/00; Y10T74/15; Y10T74/1526; Y10T74/1529; Y10T74/1553; Y10T74/1555
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3056302A
Cited
US3455559A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-11-09 | 1974-05-11 | 1974-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-09 | 1978-05-11 | 1978-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-09 | 1982-05-11 | 1982-11-10 | $7700.00 | Window Closed / Lapsed |