US3532968A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Visual battery condition indicator with relaxation oscillator and variable impedance means
Assignee: Thomas International Corp
•
Filing: 1967-08-08
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Granted: 1970-10-06
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Expires: 1987-08-08
Abstract
No abstract record available.
Inventors
- 👤 Per T Overlie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:34
CPC Classifications
H; H05; H05B; H05B41/00; H05B41/14; H05B41/30; G; G01; G01R; G01R15/00; G01R15/04; G01R31/00; G01R31/36; G01R31/3644; G01R31/3646; G01R19/00; G01R19/165; G01R19/16533; G01R19/16538; G01R19/16542
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2053536A
Cited
US2654865A
Cited
US2812491A
Cited
US2923890A
Cited
US3349386A
Cited
US3271673A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-10-05 | 1974-04-06 | 1974-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-05 | 1978-04-06 | 1978-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-05 | 1982-04-06 | 1982-10-06 | $7700.00 | Window Closed / Lapsed |