Patent US3403312A successfully refreshed from Google Patents.
US3403312A
Expired / Lapsed
US
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Circuitry for timekeeping instruments
Assignee: United States Time Corp
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Filing: 1965-12-20
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Granted: 1968-09-24
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Expires: 1985-12-20
Abstract
No abstract record available.
Inventors
- 👤 Klaus A Sparing
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:10
CPC Classifications
H; H03; H03K; H03K17/00; H03K17/28; G; G04; G04C; G04C3/00; G04C3/02; G04C3/027; G04C3/0278; G04C3/04; G04C3/06; G04C3/065; G04C3/069; G04C3/08; G04C3/10; G04C3/108
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3124731A
Cited
US3100278A
Cited
US3046460A
Cited
US3061796A
Cited
GB921948A
Cited
US3131362A
Cited
US3238431A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-09-24 | 1972-03-25 | 1972-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-09-24 | 1976-03-25 | 1976-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-09-24 | 1980-03-25 | 1980-09-24 | $7700.00 | Window Closed / Lapsed |