US2630367A
Expired / Lapsed
US
⏱️ 0.0 years remaining
System and apparatus for determining the listening habits of wave signal receiver users
Assignee: TNC US Holdings Inc
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Filing: 1947-01-31
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Granted: 1953-03-03
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Expires: 1967-01-31
Abstract
No abstract record available.
Inventors
- 👤 Henry A Rahmel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:23
CPC Classifications
H; H04; H04H; H04H60/00; H04H60/35; H04H60/38; H04H60/41; H04H60/43
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1990489A
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US2466804A
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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) | 1956-03-02 | 1956-09-01 | 1957-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-02 | 1960-09-01 | 1961-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-02 | 1964-09-01 | 1965-03-03 | $7700.00 | Window Closed / Lapsed |