US3383588A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Three prong circuit tester for electrical outlet sockets including a frame means formed with adjacent chambers for housing visual indicators
Assignee: Daniel Woodhead Co
•
Filing: 1965-08-23
•
Granted: 1968-05-14
•
Expires: 1985-08-23
Abstract
No abstract record available.
Inventors
- 👤 Russell F Stoll
- 👤 Alan B Reed
- 👤 Walter A Wjak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:52
CPC Classifications
G; G01; G01R; G01R31/00; G01R31/50
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2229927A
Cited
US2598775A
Cited
US2848681A
Cited
GB807544A
Cited
US3032738A
Cited
US2956229A
Cited
US3119997A
Cited
US3317825A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-05-14 | 1971-11-13 | 1972-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-14 | 1975-11-13 | 1976-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-14 | 1979-11-13 | 1980-05-14 | $7700.00 | Window Closed / Lapsed |