US3411020A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power turn-off timer
Assignee: Duracell Inc USA
•
Filing: 1965-10-11
•
Granted: 1968-11-12
•
Expires: 1985-10-11
Abstract
No abstract record available.
Inventors
- 👤 Lelyn D Lake
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:30
CPC Classifications
H; H03; H03K; H03K17/00; H03K17/28; H03K17/288; H03K17/292; H03K17/51; H03K17/56; H03K17/72; H03K17/73
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3158757A
Cited
US3144591A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-11-12 | 1972-05-13 | 1972-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-12 | 1976-05-13 | 1976-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-12 | 1980-05-13 | 1980-11-12 | $7700.00 | Window Closed / Lapsed |