US2425899A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control device for apparatus for recording circulatory conditions
Assignee: Individual
•
Filing: 1943-08-06
•
Granted: 1947-08-19
•
Expires: 1963-08-06
Abstract
No abstract record available.
Inventors
- 👤 Arthur L Sheiffele
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:43
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/02; A61B5/021
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US701290A
Cited
US646889A
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US727573A
Cited
US2186517A
Cited
US2196909A
Cited
US2187834A
Cited
US2343861A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-08-18 | 1951-02-17 | 1951-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-08-18 | 1955-02-17 | 1955-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-08-18 | 1959-02-17 | 1959-08-19 | $7700.00 | Window Closed / Lapsed |