Patent US3474775A successfully refreshed from Google Patents.
US3474775A
Expired / Lapsed
US
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Electrode assembly for skin contact
Assignee: Individual
•
Filing: 1967-02-27
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Granted: 1969-10-28
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Expires: 1987-02-27
Abstract
No abstract record available.
Inventors
- 👤 William R Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 08:08
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/24; A61B5/316; A61B5/318; A61B5/321; A61B5/324; A61B5/25; A61B5/251
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1975518A
Cited
US2493155A
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US2660175A
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US2895479A
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US2983273A
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US2985172A
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US3055372A
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US3085577A
Cited
US3187745A
Cited
US3295515A
Cited
US3340868A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-27 | 1973-04-28 | 1973-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-27 | 1977-04-28 | 1977-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-27 | 1981-04-28 | 1981-10-28 | $7700.00 | Window Closed / Lapsed |