Patent US3535675A successfully refreshed from Google Patents.
Patent US3520495A successfully refreshed from Google Patents.
US3520495A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tape cartridge and driving mechanism for the tape
Assignee: Individual
•
Filing: 1967-10-18
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Granted: 1970-07-14
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Expires: 1987-10-18
Abstract
No abstract record available.
Inventors
- 👤 Tadashi Sotani
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:06
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/18; G11B15/26; B; B41; B41J; B41J32/00; G11B23/00; G11B23/02; G11B23/04; G11B23/08; G11B23/087; G11B23/08707; G11B23/08778
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2804508A
Cited
US2821576A
Cited
US3161361A
Cited
US3235194A
Cited
US3245627A
Cited
US3386676A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-07-13 | 1974-01-12 | 1974-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-07-13 | 1978-01-12 | 1978-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-07-13 | 1982-01-12 | 1982-07-14 | $7700.00 | Window Closed / Lapsed |