US3328690A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Voltage detector for shielded electrical conductors
Assignee: Westinghouse Electric Corp
•
Filing: 1964-02-14
•
Granted: 1967-06-27
•
Expires: 1984-02-14
Abstract
No abstract record available.
Inventors
- 👤 Arthur M Lockie
- 👤 John F Cotton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:49
CPC Classifications
G; G01; G01R; G01R19/00; G01R19/145; G01R19/155
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1867944A
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US2395851A
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US2478007A
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US2408198A
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US2405814A
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US2704348A
Cited
GB830073A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-06-26 | 1970-12-26 | 1971-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-06-26 | 1974-12-26 | 1975-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-06-26 | 1978-12-26 | 1979-06-27 | $7700.00 | Window Closed / Lapsed |