US3512169A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetochemical method and means for creating visible displays in color
Assignee: Individual
•
Filing: 1965-10-20
•
Granted: 1970-05-12
•
Expires: 1985-10-20
Abstract
No abstract record available.
Inventors
- 👤 Lyne S Trimble
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:54
CPC Classifications
B; B01; B01J; B01J13/00; B01J13/02; B01J13/20; B01J13/22; G; G03; G03G; G03G19/00; G11; G11B; G11B5/00; G11B5/62
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-05-11 | 1973-11-10 | 1974-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-05-11 | 1977-11-10 | 1978-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-05-11 | 1981-11-10 | 1982-05-12 | $7700.00 | Window Closed / Lapsed |