US3229048A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recording system
Assignee: RCA Corp
•
Filing: 1962-07-24
•
Granted: 1966-01-11
•
Expires: 1982-07-24
Abstract
No abstract record available.
Inventors
- 👤 Edward C Fox
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:51
CPC Classifications
G; G11; G11B; G11B23/00; G11B23/0007; G11B3/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
A SYSTEM FOR REDUCING TRACING DISTORTION IN THE TRANSDUCTION OF PHONOGRAPHY RECORDS, COMPRISING: A COMPLEMENTARY DISTORTER HAVING AN INPUT CIRCUIT AND AN OUTPUT CIRCUIT, SAID COMPLEMENTARY DISTORTER INCLUDING A MULTIPLE TAP DELAY LINE COUPLED TO SAID INPUT CIRCUIT, AND MEANS FOR PASSING SIGNALS FROM ONE OF THE TAPS OF SAID DELAY LINE TO SAID OUTPUT CIRCUIT DEPENDING ON THE RATE OF CHANGE OF VOLTAGE APPLIED TO SAID INPUT CIRCUIT, AND AN ELECTROMECHANICAL TRANSDUCER AND MEANS COUPLING SAID ELECTROMECHANICAL TRANSDUCER TO ONE OF SAID INPUT AND OUTPUT CIRCUITS.
Claim 2
Independent Claim
87 words
A SYSTEM FOR REDUCING TRACING DISTORTION IN THE TRANSDUCTION OF PHONOGRAPHY RECORDS, COMPRISING: A COMPLEMENTARY DISTORTER HAVING AN INPUT CIRCUIT AND AN OUTPUT CIRCUIT, SAID COMPLEMENTARY DISTORTER INCLUDING A MULTIPLE TAP DELAY LINE COUPLED TO SAID INPUT CIRCUIT, AND MEANS FOR PASSING SIGNALS FROM ONE OF THE TAPS OF SAID DELAY LINE TO SAID OUTPUT CIRCUIT DEPENDING ON THE RATE OF CHANGE OF VOLTAGE APPLIED TO SAID INPUT CIRCUIT, AND AN ELECTROMECHANICAL TRANSDUCER AND MEANS COUPLING SAID ELECTROMECHANICAL TRANSDUCER TO ONE OF SAID INPUT AND OUTPUT CIRCUITS.
References Cited (Backward Citations)
US2284744A
Cited
US2960568A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-10 | 1969-07-12 | 1970-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-10 | 1973-07-12 | 1974-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-10 | 1977-07-12 | 1978-01-11 | $7700.00 | Window Closed / Lapsed |