US2755162A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recording apparatus for recording the listening habits of wave signal receiver users
Assignee: TNC US Holdings Inc
•
Filing: 1950-03-02
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Granted: 1956-07-17
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Expires: 1970-03-02
Abstract
No abstract record available.
Inventors
- 👤 Krahulec Fred
- 👤 Henry A Rahmel
- 👤 Robert L Freeman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:43
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)
US1930525A
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US2213886A
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US2249324A
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US2342167A
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US2397604A
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US2337568A
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US2514086A
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US2510121A
Cited
US2484734A
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US2645549A
Cited
US2575342A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-07-17 | 1960-01-16 | 1960-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-07-17 | 1964-01-16 | 1964-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-07-17 | 1968-01-16 | 1968-07-17 | $7700.00 | Window Closed / Lapsed |