Patent US3428763A successfully refreshed from Google Patents.
US3428763A
Expired / Lapsed
US
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Delay timer with selector switch
Assignee: Hamilton Watch Co
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Filing: 1967-05-29
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Granted: 1969-02-18
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Expires: 1987-05-29
Abstract
No abstract record available.
Inventors
- 👤 Ralph G Eshleman
- 👤 James W Farmer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:53
CPC Classifications
G; G04; G04F; G04F3/00; G04F3/02; G04F3/027
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2794081A
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US2834851A
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US2958282A
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US3088408A
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US3061693A
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US2900913A
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US3089923A
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US3239740A
Cited
US3129666A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-02-18 | 1972-08-19 | 1973-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-18 | 1976-08-19 | 1977-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-18 | 1980-08-19 | 1981-02-18 | $7700.00 | Window Closed / Lapsed |