Patent US2176671A successfully refreshed from Google Patents.
US3242264A
Expired / Lapsed
US
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Monophonic and stereophonic frequency-modulation receiver
Assignee: Zenith Electronics LLC
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Filing: 1961-06-19
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Granted: 1966-03-22
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Expires: 1981-06-19
Abstract
No abstract record available.
Inventors
- 👤 Vries Adrian J De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:54
CPC Classifications
H; H03; H03D; H03D1/00; H03D1/22; H03D1/2209; H03D1/2218
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
22 words
A RECEIVER FOR A STEREOPHONIC FREQUENCY-MODULATION SYSTEM FOR UTILIZING A TRANSMITTED SIGNAL COMPRISING A CARRIER FREQUENCY-MODULATED IN ACCORDANCE WITH THE MODULATION FUNCTION
Claim 2
Dependent Claim
22 words
A RECEIVER FOR A STEREOPHONIC FREQUENCY-MODULATION SYSTEM FOR UTILIZING A TRANSMITTED SIGNAL COMPRISING A CARRIER FREQUENCY-MODULATED IN ACCORDANCE WITH THE MODULATION FUNCTION
References Cited (Backward Citations)
US3009111A
Cited
US3031529A
Cited
DE1090279B
Cited
US3087994A
Cited
DE1084328B
Cited
US3009151A
Cited
US3117186A
Cited
US3122610A
Cited
US3105117A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-03-21 | 1969-09-20 | 1970-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-21 | 1973-09-20 | 1974-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-21 | 1977-09-20 | 1978-03-22 | $7700.00 | Window Closed / Lapsed |