Patent US3748185A successfully refreshed from Google Patents.
US3748185A
Expired / Lapsed
US
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Retractable and ventilated battery holder with special switching system
Assignee: Individual
•
Filing: 1971-03-16
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Granted: 1973-07-24
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Expires: 1991-03-16
Abstract
Abstract A retractable and ventilated battery holder using special contact rings for insertion between the batteries which by the manual operation of an end stud, permits the power to be turned on or off and the batteries to be isolated when idle.
Inventors
- 👤 J Cooper
- 👤 G Stubbert
- 👤 W Shepperd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:59
CPC Classifications
H; H01; H01M; H01M50/00; H01M50/20; H01M50/204; H01M50/207; H01M50/213; H01H; H01H1/00; H01H1/64; H01H1/66; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-07-23 | 1977-01-22 | 1977-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-23 | 1981-01-22 | 1981-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-23 | 1985-01-22 | 1985-07-24 | $7700.00 | Window Closed / Lapsed |