US3470021A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic recording material
Assignee: Gevaert Photo Producten NV
•
Filing: 1966-04-25
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Granted: 1969-09-30
•
Expires: 1986-04-25
Abstract
No abstract record available.
Inventors
- 👤 Serge Hendricx
- 👤 Francois Pierre Loots
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:56
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/62; G11B5/68; G11B5/70; G11B5/71; B; B05; B05D; B05D5/00; B05D5/12; G11B5/702; G11B5/7023; Y; Y10; Y10S; Y10S428/00; Y10S428/90; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31786; Y10T428/31797
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CA580909A
Cited
US2106882A
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US2654681A
Cited
GB748763A
Cited
US3042639A
Cited
US3029157A
Cited
US3072577A
Cited
US3216846A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-09-29 | 1973-03-31 | 1973-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-29 | 1977-03-31 | 1977-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-29 | 1981-03-31 | 1981-09-30 | $7700.00 | Window Closed / Lapsed |