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Patent US3486044A successfully refreshed from Google Patents.
US3486044A
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Percentage on-off timing circuit
Assignee: Duracell Inc USA
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Filing: 1966-02-28
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Granted: 1969-12-23
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Expires: 1986-02-28
Abstract
No abstract record available.
Inventors
- 👤 James Arthur Hirsch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:02
CPC Classifications
H; H03; H03K; H03K3/00; H03K3/02; H03K3/35; H03K3/351; H03K17/00; H03K17/28; H03K17/292
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3248634A
Cited
US3320440A
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US3327134A
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US3259825A
Cited
US3259854A
Cited
US3334243A
Cited
US3385957A
Cited
US3386013A
Cited
US3397323A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-22 | 1973-06-23 | 1973-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-22 | 1977-06-23 | 1977-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-22 | 1981-06-23 | 1981-12-23 | $7700.00 | Window Closed / Lapsed |