US2729971A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for measuring sedimentation rate of blood
Assignee: Individual
•
Filing: 1952-10-27
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Granted: 1956-01-10
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Expires: 1972-10-27
Abstract
No abstract record available.
Inventors
- 👤 Stein Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:15
CPC Classifications
G; G01; G01N; G01N15/00; G01N15/04; G01N15/05
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
123 words
A BLOOD TESTING DEVICE COMPRISING A CAPILLARY TUBE FOR OBSERVATION OF THE SETTLEMENT OF THE RED BLOOD CORPUSCLES, A FRAME TO SUPPORT SAID TUBE IN A NORMALLY VERTICAL POSITION, A VALVE AT THE LOWER END OF SAID TUBE, SAID VALVE COMPRISING A CUP-SHAPED BODY PROVIDED WITH AN AXIALLY DOWNWARDLY EXTENDING GUIDE, THERE BEING A BORE THROUGH SAID BODY FROM THE CENTER OF THE BODY AT AN ANGLE THROUGH THE SIDE OF THE GUIDE, AN APERTURED SEALING ELEMENT SEATED IN SAID BODY, A FLEXIBLE HOSE EXTENDING FROM SAID BODY THROUGH SAID BORE, A HOSE CLAMPING RING TO RECEIVE SAID GUIDE, RESILIENT MEANS TO URGE THE CAPILLARY TUBE, CUP-SHAPED BODY AND CLAMPING RING AXIALLY TOWARD EACH OTHER TO SECURELY HOLD THE SEALING ELEMENT AGAINST THE
Claim 2
Dependent Claim
123 words
A BLOOD TESTING DEVICE COMPRISING A CAPILLARY TUBE FOR OBSERVATION OF THE SETTLEMENT OF THE RED BLOOD CORPUSCLES, A FRAME TO SUPPORT SAID TUBE IN A NORMALLY VERTICAL POSITION, A VALVE AT THE LOWER END OF SAID TUBE, SAID VALVE COMPRISING A CUP-SHAPED BODY PROVIDED WITH AN AXIALLY DOWNWARDLY EXTENDING GUIDE, THERE BEING A BORE THROUGH SAID BODY FROM THE CENTER OF THE BODY AT AN ANGLE THROUGH THE SIDE OF THE GUIDE, AN APERTURED SEALING ELEMENT SEATED IN SAID BODY, A FLEXIBLE HOSE EXTENDING FROM SAID BODY THROUGH SAID BORE, A HOSE CLAMPING RING TO RECEIVE SAID GUIDE, RESILIENT MEANS TO URGE THE CAPILLARY TUBE, CUP-SHAPED BODY AND CLAMPING RING AXIALLY TOWARD EACH OTHER TO SECURELY HOLD THE SEALING ELEMENT AGAINST THE
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) | 1959-01-09 | 1959-07-11 | 1960-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-09 | 1963-07-11 | 1964-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-09 | 1967-07-11 | 1968-01-10 | $7700.00 | Window Closed / Lapsed |