US2886911A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Duo-panel edge illumination system
Assignee: Individual
•
Filing: 1953-07-23
•
Granted: 1959-05-19
•
Expires: 1973-07-23
Abstract
No abstract record available.
Inventors
- 👤 George K C Hardesty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:54
CPC Classifications
G; G09; G09F; G09F13/00; G09F13/18; H; H01; H01H; H01H9/00; H01H9/18; Y; Y10; Y10S; Y10S116/00; Y10S116/36
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2637296A
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US2848830A
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US2660824A
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US2768605A
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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) | 1962-05-18 | 1962-11-17 | 1963-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-18 | 1966-11-17 | 1967-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-18 | 1970-11-17 | 1971-05-19 | $7700.00 | Window Closed / Lapsed |