Patent US3550105A successfully refreshed from Google Patents.
US3550105A
Expired / Lapsed
US
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Battery condition indicator
Assignee: Thomas International Corp
•
Filing: 1967-08-08
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Granted: 1970-12-22
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Expires: 1987-08-08
Abstract
No abstract record available.
Inventors
- 👤 Rinaldo E De Cola
- 👤 Irving I Zook
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:57
CPC Classifications
G; G01; G01R; G01R19/00; G01R19/165; G01R19/16533; G01R19/16538; G01R19/16542; G01R15/00; G01R15/04; G01R31/00; G01R31/36; G01R31/3644; G01R31/3646
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2255637A
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US2576585A
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US3038110A
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US3173073A
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DE1199832B
Cited
US3234538A
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US3243794A
Cited
US3311779A
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US3349386A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-12-21 | 1974-06-22 | 1974-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-21 | 1978-06-22 | 1978-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-21 | 1982-06-22 | 1982-12-22 | $7700.00 | Window Closed / Lapsed |