Patent US2630367A successfully refreshed from Google Patents.
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
•
Filing: 1947-01-31
•
Granted: 1953-03-03
•
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 22:06
CPC Classifications
H; H04; H04H; H04H60/00; H04H60/35; H04H60/38; H04H60/41; H04H60/43
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1990489A
Cited
US2096109A
Cited
US2202452A
Cited
US2188165A
Cited
US2213886A
Cited
US2249324A
Cited
US2342167A
Cited
US2344562A
Cited
US2369662A
Cited
US2483573A
Cited
US2466804A
Cited
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 |