US3532089A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and device for assisting cardiovascular circulation
Assignee: PIET C BLOK
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Filing: 1969-11-24
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Granted: 1970-10-06
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Expires: 1989-11-24
Abstract
No abstract record available.
Inventors
- 👤 Alexander Cornelis Arntzenius
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:42
CPC Classifications
A; A61; A61H; A61H1/00; A61H1/001; A61H1/003; A61B; A61B5/00; A61B5/24; A61B5/316; A61B5/318; A61B5/346; A61B5/349; A61B5/352; A61H31/00; A61H31/004; A61H31/006; A61H31/008; A61B2562/00; A61B2562/16; A61B2562/17; A61H2203/00; A61H2203/04; A61H2203/0443; A61H2203/0456; A61H2230/00; A61H2230/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-10-05 | 1974-04-06 | 1974-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-05 | 1978-04-06 | 1978-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-05 | 1982-04-06 | 1982-10-06 | $7700.00 | Window Closed / Lapsed |