Patent US3029808A successfully refreshed from Google Patents.
US3029808A
Expired / Lapsed
US
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Direct current medical amplifier
Assignee: ARCO Manuf Corp
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Filing: 1957-07-30
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Granted: 1962-04-17
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Expires: 1977-07-30
Abstract
No abstract record available.
Inventors
- 👤 Kagan Sholly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:11
CPC Classifications
A; A61; A61N; A61N1/00; A61N1/02; A61N1/04; A61B; A61B5/00; A61B5/24; A61B5/30; A61B5/307; A61B5/308
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2081517A
Cited
FR787477A
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US2390905A
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US2603753A
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US2660165A
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US2730576A
Cited
US2711399A
Cited
US2848992A
Cited
US2782786A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-04-16 | 1965-10-16 | 1966-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-04-16 | 1969-10-16 | 1970-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-04-16 | 1973-10-16 | 1974-04-17 | $7700.00 | Window Closed / Lapsed |