Patent US4084249A successfully refreshed from Google Patents.
US2674992A
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US
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Electrocardiograph
Assignee: Burdick Corp
•
Filing: 1950-05-02
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Granted: 1954-04-13
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Expires: 1970-05-02
Abstract
No abstract record available.
Inventors
- 👤 Warren E Gilson
- 👤 Sherrill K Rasmussen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 17:54
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)
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US1839608A
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US1910361A
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US2152333A
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US2445272A
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US2480443A
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US2530739A
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US2577950A
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US2511195A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-04-12 | 1957-10-12 | 1958-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-12 | 1961-10-12 | 1962-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-12 | 1965-10-12 | 1966-04-13 | $7700.00 | Window Closed / Lapsed |