US3488646A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary disc unit
Assignee: Panasonic Holdings Corp
•
Filing: 1968-05-02
•
Granted: 1970-01-06
•
Expires: 1988-05-02
Abstract
No abstract record available.
Inventors
- 👤 Hiroshi Sugaya
- 👤 Kenji Kanai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:54
CPC Classifications
G; G11; G11B; G11B17/00; G11B17/02; G11B17/022; C; C07; C07D; C07D201/00; C07D201/16; C08; C08G; C08G69/00; C08G69/46; G11B17/32
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3336583A
Cited
US3369227A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-01-05 | 1973-07-07 | 1974-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-05 | 1977-07-07 | 1978-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-05 | 1981-07-07 | 1982-01-06 | $7700.00 | Window Closed / Lapsed |