US2657683A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cardio-pneumo-electrodermograph
Assignee: Individual
•
Filing: 1949-03-23
•
Granted: 1953-11-03
•
Expires: 1969-03-23
Abstract
No abstract record available.
Inventors
- 👤 Koller Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:11
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/05; A61B5/02; A61B5/021; A61B5/08; A61B5/0803; A61B5/24; A61B5/316; A61B5/318; A61B5/333; A61B5/338
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1681628A
Cited
US1761476A
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US2211105A
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US2308933A
Cited
US2339579A
Cited
US2379955A
Cited
US2535249A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-02 | 1957-05-04 | 1957-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-02 | 1961-05-04 | 1961-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-02 | 1965-05-04 | 1965-11-03 | $7700.00 | Window Closed / Lapsed |