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Patent US2661734A successfully refreshed from Google Patents.
US2661734A
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US
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Arrangement for recording variations in the electrical resistance of the human body
Assignee: Hartford National Bank and Trust Co
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Filing: 1948-01-17
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Granted: 1953-12-08
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Expires: 1968-01-17
Abstract
No abstract record available.
Inventors
- 👤 Holzer Wolfgang
- 👤 Marko Adolf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:22
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/05; A61B5/053; A61B5/0535
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB449686A
Cited
US1816465A
Cited
GB441057A
Cited
GB472951A
Cited
US2352011A
Cited
US2298506A
Cited
US2419682A
Cited
US2409749A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-12-07 | 1957-06-08 | 1957-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-12-07 | 1961-06-08 | 1961-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-12-07 | 1965-06-08 | 1965-12-08 | $7700.00 | Window Closed / Lapsed |