US3429640A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Procedure for sound/image movie film synchronization
Assignee: The Bank of California
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Filing: 1966-12-30
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Granted: 1969-02-25
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Expires: 1986-12-30
Abstract
No abstract record available.
Inventors
- 👤 Duane A Machtig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:24
CPC Classifications
G; G03; G03B; G03B31/00; G03B31/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
89 words
THE METHOD OF SYNCHRONIZING A MAGNETIC SOUND TRACK ON A MOTION PICTURE FILM COMPRISING THE STEPS OF: (A) TAKING A MOTION PICTURE SCENE, (B) SIMULTANEOUSLY RECORDING SOUND FROM SAID SCENE ON A TAPE RECORDER, SAID TAPE RECORDER BEING SUPPLIED WITH CURRENT FROM A VARIABLE VOLTAGE TRANSFORMER HAVING A VOLTMETER CONNECTED THERETO, (C) DEVELOPING AND RUNNING SAID FILM, (D) SIMULTANEOUSLY PLAYING BACK SAID TAPE RECORDER AND RECORDING THE SOUND ON SAID FILM, AND (E) ADJUSTING SAID VARIABLE VOLTAGE TRANSFORMER WHEREBY THE PLAYBACK VOLTAGE IS THE SAME AS THE RECORD VOLTAGE.
Claim 2
Independent Claim
89 words
THE METHOD OF SYNCHRONIZING A MAGNETIC SOUND TRACK ON A MOTION PICTURE FILM COMPRISING THE STEPS OF: (A) TAKING A MOTION PICTURE SCENE, (B) SIMULTANEOUSLY RECORDING SOUND FROM SAID SCENE ON A TAPE RECORDER, SAID TAPE RECORDER BEING SUPPLIED WITH CURRENT FROM A VARIABLE VOLTAGE TRANSFORMER HAVING A VOLTMETER CONNECTED THERETO, (C) DEVELOPING AND RUNNING SAID FILM, (D) SIMULTANEOUSLY PLAYING BACK SAID TAPE RECORDER AND RECORDING THE SOUND ON SAID FILM, AND (E) ADJUSTING SAID VARIABLE VOLTAGE TRANSFORMER WHEREBY THE PLAYBACK VOLTAGE IS THE SAME AS THE RECORD VOLTAGE.
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) | 1972-02-25 | 1972-08-26 | 1973-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-25 | 1976-08-26 | 1977-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-25 | 1980-08-26 | 1981-02-25 | $7700.00 | Window Closed / Lapsed |