Patent US2251510A successfully refreshed from Google Patents.
US3525939A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hand held instrument having a pair of indicator lamps for indicating voltage levels in electrical circuits
Assignee: Kurz Kasch Inc
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Filing: 1968-08-01
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Granted: 1970-08-25
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Expires: 1988-08-01
Abstract
No abstract record available.
Inventors
- 👤 Robert L Cartmell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:19
CPC Classifications
G; G01; G01R; G01R19/00; G01R19/165; G01R19/16533; G01R19/16557
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2942189A
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US3072895A
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US2993172A
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US3157870A
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US3231816A
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US3281692A
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US3311907A
Cited
US3321754A
Cited
US3328684A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-08-24 | 1974-02-23 | 1974-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-08-24 | 1978-02-23 | 1978-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-08-24 | 1982-02-23 | 1982-08-25 | $7700.00 | Window Closed / Lapsed |