US3544985A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Voltage-indicating device for a switch bushing stud
Assignee: Westinghouse Electric Corp
•
Filing: 1966-12-22
•
Granted: 1970-12-01
•
Expires: 1986-12-22
Abstract
No abstract record available.
Inventors
- 👤 Robert J Lawrence
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:08
CPC Classifications
G; G01; G01R; G01R19/00; G01R19/145; G01R19/155
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3125720A
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US1695864A
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US2199757A
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US2363396A
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US2632794A
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US3037161A
Cited
US3068409A
Cited
US3301983A
Cited
US3343153A
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US3393285A
Cited
US3390331A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-11-30 | 1974-06-01 | 1974-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-30 | 1978-06-01 | 1978-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-30 | 1982-06-01 | 1982-12-01 | $7700.00 | Window Closed / Lapsed |