US3083705A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vascular recording apparatus
Assignee: Individual
•
Filing: 1959-09-04
•
Granted: 1963-04-02
•
Expires: 1979-09-04
Abstract
No abstract record available.
Inventors
- 👤 Carl A Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 00:16
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/41; A61B5/414; A61B5/416; A61B5/02; A61B5/021; A61B5/022; A61B5/0235
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
115 words
IN VASCULAR RECORDING APPARATUS FOR USE IN ARTERIAL VOLUME PULSE MEASUREMENTS WHEREIN PULSE TRANSMISSION MEANS ESTABLISH AND CONVEY A PULSE-INDUCED VOLUME VARIATION TO A MOVABLE VOLUME VARIATION RESPONSIVE MEANS FOR RECORDING PURPOSES, THE IMPROVEMENT IN SAID PULSE TRANSMISSION MEANS WHICH COMPRISES A CLOSED HYDRAULIC SYSTEM OF NON-COMPRESSIBLE LIQUID AND INCLUDING PRESSURIZING MEANS TO PLACE AND MAINTAIN SAID SYSTEM UNDER SELECTED PRESSURE DURING PULSE MEASUREMENTS, PULSE AREA APPLICATION MEANS FORMING A PART OF SAID SYSTEM AND DIRECTLY SUBJECTED TO THE HYDRAULIC PRESSURE ESTABLISHED THEREIN, AND A CLOSED AND SEPARATE FLUID SYSTEM IN PULSE-INDUCED VOLUME VARIATION TRANSMITTING RELATION WITH SAID PULSE AREA APPLICATION MEANS, SAID FLUID SYSTEM INCLUDING AS A PART THEREOF SAID VOLUME VARIATION RESPONSIVE MEANS.
Claim 2
Dependent Claim
115 words
IN VASCULAR RECORDING APPARATUS FOR USE IN ARTERIAL VOLUME PULSE MEASUREMENTS WHEREIN PULSE TRANSMISSION MEANS ESTABLISH AND CONVEY A PULSE-INDUCED VOLUME VARIATION TO A MOVABLE VOLUME VARIATION RESPONSIVE MEANS FOR RECORDING PURPOSES, THE IMPROVEMENT IN SAID PULSE TRANSMISSION MEANS WHICH COMPRISES A CLOSED HYDRAULIC SYSTEM OF NON-COMPRESSIBLE LIQUID AND INCLUDING PRESSURIZING MEANS TO PLACE AND MAINTAIN SAID SYSTEM UNDER SELECTED PRESSURE DURING PULSE MEASUREMENTS, PULSE AREA APPLICATION MEANS FORMING A PART OF SAID SYSTEM AND DIRECTLY SUBJECTED TO THE HYDRAULIC PRESSURE ESTABLISHED THEREIN, AND A CLOSED AND SEPARATE FLUID SYSTEM IN PULSE-INDUCED VOLUME VARIATION TRANSMITTING RELATION WITH SAID PULSE AREA APPLICATION MEANS, SAID FLUID SYSTEM INCLUDING AS A PART THEREOF SAID VOLUME VARIATION RESPONSIVE MEANS.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-04-01 | 1966-10-01 | 1967-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-01 | 1970-10-01 | 1971-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-01 | 1974-10-01 | 1975-04-02 | $7700.00 | Window Closed / Lapsed |