US3216846A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing a magnetic recording material
Assignee: Gevaert Photo Producten NV
•
Filing: 1963-01-21
•
Granted: 1965-11-09
•
Expires: 1983-01-21
Abstract
No abstract record available.
Inventors
- 👤 Hendricx Serge
- 👤 Bisschops Johan Heinrich
- 👤 Willy Karel Van Landeghem
- 👤 Loots Francois Pierre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:29
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/62; G11B5/68; G11B5/70; G11B5/702; G11B5/7021
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-11-08 | 1969-05-10 | 1969-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-08 | 1973-05-10 | 1973-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-08 | 1977-05-10 | 1977-11-09 | $7700.00 | Window Closed / Lapsed |