Patent US3390331A successfully refreshed from Google Patents.
US3390331A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for detecting the presence of voltage in connectors of high voltage systems
Assignee: Elastic Stop Nut Corp
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Filing: 1966-03-21
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Granted: 1968-06-25
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Expires: 1986-03-21
Abstract
No abstract record available.
Inventors
- 👤 Robert R Brown
- 👤 Michael W Malia
- 👤 Robert C Ruete
- 👤 Frank A Silva
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:24
CPC Classifications
H; H01; H01R; H01R13/00; H01R13/46; H01R13/53; G; G01; G01R; G01R1/00; G01R1/02; G01R1/06; G01R1/067; G01R1/06777; F; F02; F02P; F02P17/00; F02P2017/006; Y; Y10; Y10S; Y10S439/00; Y10S439/921
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USRE18189E
Cited
US1750326A
Cited
US1902617A
Cited
US2937359A
Cited
US3243756A
Cited
US3328690A
Cited
US3343153A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-06-25 | 1971-12-25 | 1972-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-06-25 | 1975-12-25 | 1976-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-06-25 | 1979-12-25 | 1980-06-25 | $7700.00 | Window Closed / Lapsed |