US3520294A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Labor contraction monitoring system
Assignee: Electro Medical System Inc
•
Filing: 1968-01-26
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Granted: 1970-07-14
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Expires: 1988-01-26
Abstract
No abstract record available.
Inventors
- 👤 Jameso Fuzzell
- 👤 Weldon R Sittner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 03:22
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/68; A61B5/6801; A61B5/683; A61B5/6831; A61B5/103; A61B5/11; A61B5/113; A61B5/1135; A61B5/43; A61B5/4306; A61B5/4343; A61B5/4356
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2831478A
Cited
US3268845A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-07-13 | 1974-01-12 | 1974-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-07-13 | 1978-01-12 | 1978-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-07-13 | 1982-01-12 | 1982-07-14 | $7700.00 | Window Closed / Lapsed |