Patent US3200207A successfully refreshed from Google Patents.
US3200207A
Expired / Lapsed
US
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Method and means for recording and reproducing magnetograms
Assignee: Siemens Schuckertwerke AG
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Filing: 1959-12-09
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Granted: 1965-08-10
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Expires: 1979-12-09
Abstract
No abstract record available.
Inventors
- 👤 Rainer Erich
- 👤 Wolf Christian-Friedrich
- 👤 Engel Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:58
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/02; G05; G05B; G05B19/00; G05B19/02; G05B19/04; G05B19/12; G05B19/16; G11B5/127; G11B5/33; G11B5/37; G11B5/376; G11B2005/0002
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
114 words
THE METHOD OF RECORDING AND REPRODUCING SOUND WITH THE AID OF A TRAVELLING MAGNETOGRAM CARRIER, WHICH COMPRISES TRANSLATING SOUND IN TWO CHANNELS INTO RESPECTIVE TRANSMITTER VOLTAGES AND RECORDING THEM MAGNETICALLY AND MUTUALLY SUPERIMPOSED ON A SINGLE SOUND TRACK OF THE CARRIER, ADDITIONALLY MAGNETIZING THE CARRIER BY DIRECTFLUX SIGNALS OF REVERSIBLE POLARITY IN ACCORDANCE WITH THE MAGNETUDE AND DIRECTION OF THE DIFFERENCE BETWEEN SAID TWO TRANSMITTER VOLTAGES; SEPARATELY TRANSDUCING FROM SAID SOUND TRACK TWO RECEIVER VOLTAGES AND TRANSLATING THEN INTO REPRODUCED SOUND AT SEPARATE LOCATIONS, TRANSDUCING FROM THE DIRECT-FLUX MAGNETIZATION OF THE CARRIER A REVERSIBLE DIRECT VOLTAGE, AND INVERSELY CONTROLLING THE VOLUME OF REPRODUCED SOUND AT SAID RESPECTIVE LOCATIONS IN DEPENDENCE UPON SAID DIRECT VOLTAGE.
Claim 2
Independent Claim
114 words
THE METHOD OF RECORDING AND REPRODUCING SOUND WITH THE AID OF A TRAVELLING MAGNETOGRAM CARRIER, WHICH COMPRISES TRANSLATING SOUND IN TWO CHANNELS INTO RESPECTIVE TRANSMITTER VOLTAGES AND RECORDING THEM MAGNETICALLY AND MUTUALLY SUPERIMPOSED ON A SINGLE SOUND TRACK OF THE CARRIER, ADDITIONALLY MAGNETIZING THE CARRIER BY DIRECTFLUX SIGNALS OF REVERSIBLE POLARITY IN ACCORDANCE WITH THE MAGNETUDE AND DIRECTION OF THE DIFFERENCE BETWEEN SAID TWO TRANSMITTER VOLTAGES; SEPARATELY TRANSDUCING FROM SAID SOUND TRACK TWO RECEIVER VOLTAGES AND TRANSLATING THEN INTO REPRODUCED SOUND AT SEPARATE LOCATIONS, TRANSDUCING FROM THE DIRECT-FLUX MAGNETIZATION OF THE CARRIER A REVERSIBLE DIRECT VOLTAGE, AND INVERSELY CONTROLLING THE VOLUME OF REPRODUCED SOUND AT SAID RESPECTIVE LOCATIONS IN DEPENDENCE UPON SAID DIRECT VOLTAGE.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-09 | 1969-02-08 | 1969-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-09 | 1973-02-08 | 1973-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-09 | 1977-02-08 | 1977-08-10 | $7700.00 | Window Closed / Lapsed |