Patent US2455810A successfully refreshed from Google Patents.
US2455810A
Expired / Lapsed
US
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Device for inspecting blood circulation
Assignee: Individual
•
Filing: 1945-06-08
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Granted: 1948-12-07
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Expires: 1965-06-08
Abstract
No abstract record available.
Inventors
- 👤 Ryan William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:30
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/02; A61B5/026
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US298469A
Cited
DE492770C
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US1290647A
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US1683877A
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US2257331A
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US2308516A
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US2357238A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-12-07 | 1952-06-07 | 1952-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-12-07 | 1956-06-07 | 1956-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-12-07 | 1960-06-07 | 1960-12-07 | $7700.00 | Window Closed / Lapsed |