US3261925A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stereophonic photoelectric transducer
Assignee: A BERNARD SMITH LABORATORIES Inc
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Filing: 1960-10-06
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Granted: 1966-07-19
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Expires: 1980-10-06
Abstract
No abstract record available.
Inventors
- 👤 Albert B Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:50
CPC Classifications
H; H04; H04R; H04R23/00; H04R23/008
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
121 words
A STEREOPHONIC PHONOGRAPH PICK-UP DEVICE COMPRISING IN COMBINATION, A SOURCE OF ELECTRO-MAGNETIC RADIATION, MEANS FOR CONFINING AND DIRECTING THE RADIATION FROM SAID SOURCE IN TWO PATHS DISPOSED NORMAL TO EACH OTHER, A PAIR OF RADIATION RESPONSIVE DEVICES FOR CONVERTING SAID RADIATION INTO CORRESPONDING ELECTRICAL SIGNALS, MOVABLE MEANS INTERCEPTING EACH PATH AND ADAPTED TO INDEPENDENTLY MODULATE THE RADITION PASSING THERETHROUGH, STYLUS MEANS ADAPTED TO ENGAGE A STEREOPHONICALLY PRODUCED RECORD GROOVE OPERATIVELY COUPLED FOR UNITARY MOVEMENT WITH SAID MODULATING MEANS, A HOUSING OPAQUE TO ELECTROMAGNETIC RADIATION INCLUDING THE SOURCE AND MODULATING MEANS AND HAVING A STYLUS APERTURE THERETHROUGH, AND MEANS FOR RESILIENTLY SUPPORTING THE STYLUS IN SAID HOUSING APERTURE FOR RELATIVE MOTION THEREIN IN RESPONSE TO STYLUS ENGAGEMENT WITH A STEREOPHONIC RECORD GROOVE.
Claim 2
Dependent Claim
121 words
A STEREOPHONIC PHONOGRAPH PICK-UP DEVICE COMPRISING IN COMBINATION, A SOURCE OF ELECTRO-MAGNETIC RADIATION, MEANS FOR CONFINING AND DIRECTING THE RADIATION FROM SAID SOURCE IN TWO PATHS DISPOSED NORMAL TO EACH OTHER, A PAIR OF RADIATION RESPONSIVE DEVICES FOR CONVERTING SAID RADIATION INTO CORRESPONDING ELECTRICAL SIGNALS, MOVABLE MEANS INTERCEPTING EACH PATH AND ADAPTED TO INDEPENDENTLY MODULATE THE RADITION PASSING THERETHROUGH, STYLUS MEANS ADAPTED TO ENGAGE A STEREOPHONICALLY PRODUCED RECORD GROOVE OPERATIVELY COUPLED FOR UNITARY MOVEMENT WITH SAID MODULATING MEANS, A HOUSING OPAQUE TO ELECTROMAGNETIC RADIATION INCLUDING THE SOURCE AND MODULATING MEANS AND HAVING A STYLUS APERTURE THERETHROUGH, AND MEANS FOR RESILIENTLY SUPPORTING THE STYLUS IN SAID HOUSING APERTURE FOR RELATIVE MOTION THEREIN IN RESPONSE TO STYLUS ENGAGEMENT WITH A STEREOPHONIC RECORD GROOVE.
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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) | 1969-07-18 | 1970-01-17 | 1970-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-18 | 1974-01-17 | 1974-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-18 | 1978-01-17 | 1978-07-19 | $7700.00 | Window Closed / Lapsed |