US2590554A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical recording instrument for electrocardiographs
Assignee: TECHNICON CARDIOGRAPH Corp
•
Filing: 1946-12-04
•
Granted: 1952-03-25
•
Expires: 1966-12-04
Abstract
No abstract record available.
Inventors
- 👤 Lukacs Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:02
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/24; A61B5/316; A61B5/318; A61B5/333; A61B5/338
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1646940A
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US1927899A
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US1950832A
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US2061457A
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US2170505A
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US2148188A
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US2267465A
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US2331205A
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US2369922A
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US2391765A
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US2412639A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-03-25 | 1955-09-24 | 1956-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-03-25 | 1959-09-24 | 1960-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-03-25 | 1963-09-24 | 1964-03-25 | $7700.00 | Window Closed / Lapsed |