Patent US3148342A successfully refreshed from Google Patents.
US3148342A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stereophonic signal transmission system
Assignee: RCA Corp
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Filing: 1960-02-05
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Granted: 1964-09-08
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Expires: 1980-02-05
Abstract
No abstract record available.
Inventors
- 👤 Holt Francis Raymond
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:45
CPC Classifications
H; H04; H04H; H04H20/00; H04H20/86; H04H20/88
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
7 words
APPARATUS FOR GENERATING A SIGNAL PROPORTIONAL TO
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-09-08 | 1968-03-09 | 1968-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-08 | 1972-03-09 | 1972-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-08 | 1976-03-09 | 1976-09-08 | $7700.00 | Window Closed / Lapsed |