Patent US3568345A successfully refreshed from Google Patents.
US3568345A
Expired / Lapsed
US
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Display devices
Assignee: Individual
•
Filing: 1968-07-24
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Granted: 1971-03-09
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Expires: 1988-07-24
Abstract
Abstract A DEVICE FOR DISPLAYING BOTH SIDES OF A SERIES OF POSTERLIKE SHEETS IN A CONTINUOUSLY REPEATED MANNER, THE SHEETS BEING POSITIVELY ENGAGED AND TRANSFERRED, ONE AT A TIME, AROUND A ROLLER FROM A VIEWING POSITION TO THE REAR OF A STACK OF THE SHEETS AND THE DEVICE INCLUDING ELECTRICALLYOPERATED DELAY MECHANISM TO GOVERN THE LENGTH OF VIEWING TIME FOR EACH SIDE OF EACH SHEET.
Inventors
- 👤 Maurice Grosse
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 08:09
CPC Classifications
G; G09; G09F; G09F11/00; G09F11/12; G09F11/30; G09F11/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-03-08 | 1974-09-07 | 1975-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-08 | 1978-09-07 | 1979-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-08 | 1982-09-07 | 1983-03-09 | $7700.00 | Window Closed / Lapsed |