US3177767A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic timed signalling device for use in a sound and picture projector
Assignee: Armstrong Templeman Inc
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Filing: 1961-02-01
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Granted: 1965-04-13
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Expires: 1981-02-01
Abstract
No abstract record available.
Inventors
- 👤 Basil E Templeman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:34
CPC Classifications
G; G03; G03B; G03B31/00; G03B31/06
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
94 words
IN A SLIDE PROJECTOR OR THE LIKE HAVING INPUT MEANS FOR AUTOMATICALLY ADVANCING THE PROJECTOR TO A CONDITION FOR PROJECTING SUCCEEDING SLIDES IN ACCORDANCE WITH A SET OF AUDIO MESSAGES, ONE FOR EACH SLIDE; MEANS OPERATED BY THE PROJECTOR FOR DISENGAGING THE INPUT MEANS FROM THE PROJECTOR UPON THE POSITIONING FOR PROJECTION OF THE LAST SLIDE OF THE SERIES; MEANS FOR CONTINUING THE AUDIO MESSAGES WHILE THE INPUT MEANS IS DISENGAGED; AND MEANS OPERATED BY THE SOURCE OF AUDIO MESSAGES AFTER THE LAST ONE FOR PASSING THE LAST SLIDE OUT OF PROJECTING POSITION, THERE-
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) | 1968-04-12 | 1968-10-12 | 1969-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-12 | 1972-10-12 | 1973-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-12 | 1976-10-12 | 1977-04-13 | $7700.00 | Window Closed / Lapsed |