US2591443A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for determining capillary fragility
Assignee: Individual
•
Filing: 1947-12-15
•
Granted: 1952-04-01
•
Expires: 1967-12-15
Abstract
No abstract record available.
Inventors
- 👤 Glen M Larson
- 👤 Howard B Lewis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 09:09
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/44; A61B5/441
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US70087A
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US391414A
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US758653A
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CH31254A
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US1001175A
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US1106276A
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US1107888A
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FR579437A
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US1730535A
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US2074401A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-04-01 | 1955-10-01 | 1956-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-01 | 1959-10-01 | 1960-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-01 | 1963-10-01 | 1964-04-01 | $7700.00 | Window Closed / Lapsed |