Patent US2655417A successfully refreshed from Google Patents.
Patent US3381085A successfully refreshed from Google Patents.
US3381085A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Duplication of video disc recordings
Assignee: 3M Co
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Filing: 1962-05-09
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Granted: 1968-04-30
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Expires: 1982-05-09
Abstract
No abstract record available.
Inventors
- 👤 Wayne R Johnson
- 👤 Moss Dean L De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 04:50
CPC Classifications
H; H04; H04N; H04N5/00; H04N5/76; H04N5/84; H04N5/85; G; G11; G11B; G11B17/00; G11B17/02; G11B17/022; G11B17/028; G11B17/32; G11B19/00; G11B19/20; G11B19/28; G11B7/00; G11B7/002; G11B7/0037; G11B7/24; G11B7/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
152 words
A TRANSDUCING SYSTEM FOR USE WITH A RECORDING MEMBER HAVING CHARACTERISTICS FOR STORING VARIABLE INFORMATION ON THE RECORDING MEMBER IN A TRACK IN THE FORM OF VARIABLE LIGHT TRANSMISSION CHARACTERISTICS REPRESENTATIVE OF SUCH VARIABLE INFORMATION, INCLUDING, FIRST MEANS DISPOSED RELATIVE TO THE RECORDING MEMBER FOR PRODUCING A FLOW OF FLUID, SECOND MEANS OPERATIVELY COUPLED TO THE RECORDING MEMBER AND HAVING CHARACTERISTICS FOR CONVERTING THE FLOW OF FLUID TO A ROTARY MOVEMENT OF THE RECORDING MEMBER, MEANS OPERATIVELY COUPLED TO THE FIRST MEANS AND DISPOSED RELATIVE TO THE SECOND MEANS FOR DIRECTING THE FLOW OF FLUID FROM THE FIRST MEANS TOWARD THE SECOND MEANS TO PRODUCE A ROTATION OF THE RECORDING MEMBER IN A FREE-FLOATING STATE, AND MEANS DISPOSED RELATIVE TO THE RECORDING MEMBER FOR OBTAINING A TRANSDUCING ACTION BETWEEN THE VARIABLE INFORMATION AND THE VARIABLE LIGHT TRANSMISSION CHARACTERISTICS IN THE TRACK ON THE RECORDING MEMBER DURING THE ROTATION OF THE RECORDING MEMBER.
Claim 2
Dependent Claim
152 words
A TRANSDUCING SYSTEM FOR USE WITH A RECORDING MEMBER HAVING CHARACTERISTICS FOR STORING VARIABLE INFORMATION ON THE RECORDING MEMBER IN A TRACK IN THE FORM OF VARIABLE LIGHT TRANSMISSION CHARACTERISTICS REPRESENTATIVE OF SUCH VARIABLE INFORMATION, INCLUDING, FIRST MEANS DISPOSED RELATIVE TO THE RECORDING MEMBER FOR PRODUCING A FLOW OF FLUID, SECOND MEANS OPERATIVELY COUPLED TO THE RECORDING MEMBER AND HAVING CHARACTERISTICS FOR CONVERTING THE FLOW OF FLUID TO A ROTARY MOVEMENT OF THE RECORDING MEMBER, MEANS OPERATIVELY COUPLED TO THE FIRST MEANS AND DISPOSED RELATIVE TO THE SECOND MEANS FOR DIRECTING THE FLOW OF FLUID FROM THE FIRST MEANS TOWARD THE SECOND MEANS TO PRODUCE A ROTATION OF THE RECORDING MEMBER IN A FREE-FLOATING STATE, AND MEANS DISPOSED RELATIVE TO THE RECORDING MEMBER FOR OBTAINING A TRANSDUCING ACTION BETWEEN THE VARIABLE INFORMATION AND THE VARIABLE LIGHT TRANSMISSION CHARACTERISTICS IN THE TRACK ON THE RECORDING MEMBER DURING THE ROTATION OF THE RECORDING MEMBER.
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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) | 1971-04-30 | 1971-10-30 | 1972-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-30 | 1975-10-30 | 1976-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-30 | 1979-10-30 | 1980-04-30 | $7700.00 | Window Closed / Lapsed |