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Patent US2955895A successfully refreshed from Google Patents.
US2955895A
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US
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Cardiograph stylus calibrations
Assignee: CARDIOTRON ELECTRO MEDICAL LAB
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Filing: 1958-01-02
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Granted: 1960-10-11
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Expires: 1978-01-02
Abstract
No abstract record available.
Inventors
- 👤 Ned W Buoymaster
- 👤 Duane B Haagensen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:19
CPC Classifications
G; G01; G01D; G01D15/00; G01D15/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-10-11 | 1964-04-11 | 1964-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-10-11 | 1968-04-11 | 1968-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-10-11 | 1972-04-11 | 1972-10-11 | $7700.00 | Window Closed / Lapsed |