US3450831A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Information recording and display with particle migration in an electric field
Assignee: General Electric Co
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Filing: 1966-02-11
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Granted: 1969-06-17
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Expires: 1986-02-11
Abstract
No abstract record available.
Inventors
- 👤 Joseph Gaynor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:32
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/22; G03G15/34
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) | 1972-06-16 | 1972-12-16 | 1973-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-16 | 1976-12-16 | 1977-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-16 | 1980-12-16 | 1981-06-17 | $7700.00 | Window Closed / Lapsed |