US3000638A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Record recording and playing device
Assignee: Individual
•
Filing: 1956-04-23
•
Granted: 1961-09-19
•
Expires: 1976-04-23
Abstract
No abstract record available.
Inventors
- 👤 James R Dennis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:28
CPC Classifications
G; G11; G11B; G11B21/00; G11B21/02; G11B21/04; G11B21/043
Claims Analysis
Total Claims: 0
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US2519592A
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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) | 1964-09-18 | 1965-03-20 | 1965-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-09-18 | 1969-03-20 | 1969-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-09-18 | 1973-03-20 | 1973-09-19 | $7700.00 | Window Closed / Lapsed |