US3532835A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Signal responsive control device for disconnecting a reproducer for predetermined time periods
Assignee: Hitachi Ltd
•
Filing: 1967-09-28
•
Granted: 1970-10-06
•
Expires: 1987-09-28
Abstract
No abstract record available.
Inventors
- 👤 Takeshi Nakayama
- 👤 Tanetoshi Miura
- 👤 Tsuneji Koshikswa
- 👤 Yasuaki Nakano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:06
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/18; G11B27/00; G11B27/005; G11B27/10; G11B27/19; G11B27/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3011030A
Cited
US3402226A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-10-05 | 1974-04-06 | 1974-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-05 | 1978-04-06 | 1978-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-05 | 1982-04-06 | 1982-10-06 | $7700.00 | Window Closed / Lapsed |