US3367323A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fetal electrocardiograph and method
Assignee: NAT RES COUNCLL
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Filing: 1965-03-17
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Granted: 1968-02-06
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Expires: 1985-03-17
Abstract
No abstract record available.
Inventors
- 👤 Graham T Schuler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 17:07
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/43; A61B5/4306; A61B5/4343; A61B5/4362; A61B5/24; A61B5/25; A61B5/251; A61B5/252; A61B5/279; A61B5/28; A61B5/316; A61B5/318; A61B5/344; A61N; A61N1/00; A61N1/02; A61N1/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-02-05 | 1971-08-07 | 1972-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-02-05 | 1975-08-07 | 1976-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-02-05 | 1979-08-07 | 1980-02-06 | $7700.00 | Window Closed / Lapsed |