US2881417A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Decimal-to-binary converter for system for recording listening or viewing habits of wave signal receiver users
Assignee: TNC US Holdings Inc
•
Filing: 1953-09-21
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Granted: 1959-04-07
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Expires: 1973-09-21
Abstract
No abstract record available.
Inventors
- 👤 Charles H Currey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:08
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)
US2643172A
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US1955043A
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US2532731A
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US2476389A
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US2660663A
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US2630562A
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US2676085A
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US2657856A
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US2697549A
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US2751449A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-04-06 | 1962-10-06 | 1963-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-06 | 1966-10-06 | 1967-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-06 | 1970-10-06 | 1971-04-07 | $7700.00 | Window Closed / Lapsed |