Patent US3435318A successfully refreshed from Google Patents.
US3435318A
Expired / Lapsed
US
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Safety battery charger
Assignee: Dynamic Instrument Corp
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Filing: 1966-03-02
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Granted: 1969-03-25
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Expires: 1986-03-02
Abstract
No abstract record available.
Inventors
- 👤 Joseph A Mas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:41
CPC Classifications
H; H02; H02J; H02J7/00; H02J7/485
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2143745A
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US2898539A
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US2991376A
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US3089071A
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US3293437A
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US3021469A
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US3217228A
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US3209230A
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US3256474A
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US3296514A
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US3307096A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-03-24 | 1972-09-23 | 1973-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-24 | 1976-09-23 | 1977-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-24 | 1980-09-23 | 1981-03-25 | $7700.00 | Window Closed / Lapsed |