US3674346A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Audio-visual recording and display methods and apparatus
Assignee: Bell and Howell Co
•
Filing: 1970-01-02
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Granted: 1972-07-04
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Expires: 1990-01-02
Abstract
Abstract AUDIO-VISUAL DISPLAY METHODS AND APPARATUS IN WHICH SOUND ACCOMPANIMENTS ARE AUTOMATICALLY STARTED IN RESPONSE TO INDICATIONS ON THE IMAGE FILM, AND IN WHICH SOUND SEQUENCE ARE ATOMATICALLY STOPPED IN RESPONSE TO INDICATIONS ON THE SOUND RECORDING MEDIUM, AND METHODS AND APPARATUS FOR PROVIDING AUDIO-VISUA DISPLAY MEDIA IN WHICH START INDICATIONS FOR SOUND SEQUENCES ARE PROVIDED ON IMAGE FILM, WHILE STOP INDICATIONS FOR SOUND SEQUENCES ARE PROVIDED ON THE SOUND RECORDING MEDIUM.
Inventors
- 👤 Joseph H Lancor Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:40
CPC Classifications
G; G03; G03B; G03B31/00; G03B31/04
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) | 1975-07-04 | 1976-01-03 | 1976-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-04 | 1980-01-03 | 1980-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-04 | 1984-01-03 | 1984-07-04 | $7700.00 | Window Closed / Lapsed |