US3229685A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Blood pressure measuring
Assignee: Emerson Electric Co
•
Filing: 1963-04-19
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Granted: 1966-01-18
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Expires: 1983-04-19
Abstract
No abstract record available.
Inventors
- 👤 Donald L Ringkamp
- 👤 John R Thompson
- 👤 Thomas H Jacobi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:54
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/02; A61B5/024; A61B5/02416; A61B5/02422; A61B5/021; A61B5/022; A61B5/0225; A61B5/02255
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
A BLOOD PRESSURE MEASURING DEVICE COMPRISING A LIGHT SOURCE, A LIGHT SENSITIVE RESISTOR POSITIONED TO RECEIVE LIGHT FROM SAID SOURCE, LIGHT PERMEABLE ASTRINGENT MEANS LOCATED BETWEEN SAID LIGHT SOURCE AND SAID LIGHT SENSITIVE RESISTOR AND ADAPTED TO RECEIVE AND ENCOMPASS A HUMAN MEMBER AND TO POSITION A MEMBER SO RECEIVED BETWEEN SAID LIGHT SOURCE AND SAID LIGHT SENSITIVE RESISTOR, MEANS FOR SELECTIVELY VARYING THE ASTRINGENCY OF SAID ASTRINGENT MEANS, AND MEANS, ELECTRICALLY CONNECTED TO SAID LIGHT SENSITIVE RESISTOR, FOR CONVERTING TO INTELLIGIBLE FORM CHANGE IN INTENSITY OF LIGHT REACHING SAID LIGHT SENSITIVE RESISTOR FROM SAID SOURCE, THROUGH SAID ASTRINGENT MEANS AND MEMBER, WITH VARIATIONS IN ASTRINGENCY OF SAID ASTRINGENT MEANS.
Claim 2
Dependent Claim
110 words
A BLOOD PRESSURE MEASURING DEVICE COMPRISING A LIGHT SOURCE, A LIGHT SENSITIVE RESISTOR POSITIONED TO RECEIVE LIGHT FROM SAID SOURCE, LIGHT PERMEABLE ASTRINGENT MEANS LOCATED BETWEEN SAID LIGHT SOURCE AND SAID LIGHT SENSITIVE RESISTOR AND ADAPTED TO RECEIVE AND ENCOMPASS A HUMAN MEMBER AND TO POSITION A MEMBER SO RECEIVED BETWEEN SAID LIGHT SOURCE AND SAID LIGHT SENSITIVE RESISTOR, MEANS FOR SELECTIVELY VARYING THE ASTRINGENCY OF SAID ASTRINGENT MEANS, AND MEANS, ELECTRICALLY CONNECTED TO SAID LIGHT SENSITIVE RESISTOR, FOR CONVERTING TO INTELLIGIBLE FORM CHANGE IN INTENSITY OF LIGHT REACHING SAID LIGHT SENSITIVE RESISTOR FROM SAID SOURCE, THROUGH SAID ASTRINGENT MEANS AND MEMBER, WITH VARIATIONS IN ASTRINGENCY OF SAID ASTRINGENT MEANS.
References Cited (Backward Citations)
US2865365A
Cited
US2493301A
Cited
US2540163A
Cited
US2944542A
Cited
US3087488A
Cited
US3090377A
Cited
US3103214A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-17 | 1969-07-19 | 1970-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-17 | 1973-07-19 | 1974-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-17 | 1977-07-19 | 1978-01-18 | $7700.00 | Window Closed / Lapsed |