US3672771A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aperture card duplicator apparatus
Assignee: Kleer-Vu Industries Inc
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Filing: 1969-05-05
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Granted: 1972-06-27
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Expires: 1989-05-05
Abstract
Abstract APERTURE CARD DUPLICATING APPARATUS IN WHICH A MASTER APERTURE CARD IS RECEIVED IN A RECEIVING STATION ADJACENT TO AN EXPOSURE STATION. COPY CARDS ARE FED ONE AT A TIME FROM A STACK ADJACENT THE EXPOSURE STATION, ARE EXPOSED WITHIN THE EXPOSURE STATION AND MOVED THEREAFTER TO THE DEVELOPING STATION AND THEN TO AN EXIT HOPPER. A CIRCUIT RESPONSIVE TO THE PRESENCE OF A MASTER APERTURE CARD OR FILM TO BE COPIED IS PROVIDED TO PERMIT MOVEMENT OF AN EXPOSED COPY CARD FROM THE EXPOSURE STATION TO THE DEVELOPING STATION WITHOUT FEEDING AN ADDITIONAL COPY CARD WHEN THE FILM OR CARD IS NO LONGER IN POSITION TO BE COPIED.
Inventors
- 👤 Harold Lakin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 09:25
CPC Classifications
G; G03; G03B; G03B17/00; G03B17/48; G03B17/50
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) | 1975-06-27 | 1975-12-27 | 1976-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-27 | 1979-12-27 | 1980-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-27 | 1983-12-27 | 1984-06-27 | $7700.00 | Window Closed / Lapsed |