US3525987A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Floating shoe for one or more recording heads
Assignee: US Philips Corp
•
Filing: 1968-06-05
•
Granted: 1970-08-25
•
Expires: 1988-06-05
Abstract
No abstract record available.
Inventors
- 👤 Everhardus Albertus Muijderman
- 👤 Johannes Mattheus Visscher
- 👤 Jan Van Der Hilst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:40
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/48; G11B5/58; G11B5/60; G11B5/6005
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3430006A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-08-24 | 1974-02-23 | 1974-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-08-24 | 1978-02-23 | 1978-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-08-24 | 1982-02-23 | 1982-08-25 | $7700.00 | Window Closed / Lapsed |