US3387797A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tape recorder
Assignee: TNC US Holdings Inc
•
Filing: 1965-10-22
•
Granted: 1968-06-11
•
Expires: 1985-10-22
Abstract
No abstract record available.
Inventors
- 👤 Henry A Rahmel
- 👤 William L Grube
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:20
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/18; G11B15/43; G11B15/22; G11B23/00; G11B23/02; G11B23/113; G11B27/00; G11B27/10; G11B27/34; G11B31/00; G11B31/003; Y; Y10; Y10T; Y10T83/00; Y10T83/889; Y10T83/896
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3084883A
Cited
US3125309A
Cited
GB407937A
Cited
US2630716A
Cited
US3000591A
Cited
US3080133A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-06-11 | 1971-12-11 | 1972-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-06-11 | 1975-12-11 | 1976-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-06-11 | 1979-12-11 | 1980-06-11 | $7700.00 | Window Closed / Lapsed |