Patent US3202149A successfully refreshed from Google Patents.
US3202149A
Expired / Lapsed
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Cardiotachometer
Assignee: Birtcher Corp
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Filing: 1963-02-27
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Granted: 1965-08-24
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Expires: 1983-02-27
Abstract
No abstract record available.
Inventors
- 👤 Emmons Donald La Vern
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:44
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/02; A61B5/024; A61B5/0245
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
A CARDIOTACHOMETER COMPRISING: ELECTRICAL MEANS TO CONVERT HEART BEATS INTO CORRESPONDING PULSES OF SUBSTANTIALLY FIXED WIDTH; FIRST AND SECOND CAPACITORS; CIRCUIT MEANS CONNECTED TO SAID ELECTRICAL MEANS TO ALTERNATELY CHARGE AND DISCHARGE ONE OR THE OTHER OF SAID CAPACITORS AT THE RATE OF OCCURRENCE OF SAID PULSES; CONTROL MEANS TO ALTERNATELY CONNECT SAID FIRST AND SAID SECOND CAPACITORS TO SAID CIRCUIT MEANS DURING SUCCESSIVE SAMPLING INTERVALS; AND VOLTAGE MEASURING MEANS FOR INDICATING THE ACCUMULATED CHARGE ON ONE OF SAID CAPACITORS WHILE THE OTHER OF SAID CAPACITORS IS CONNECTED TO SAID CIRCUIT MEANS AND THEREBY INDICATE THE RATE OF OCCURRENCE OF SAID HEART BEATS DURING SAID SUCCESSIVE SAMPLING INTERVALS.
Claim 2
Dependent Claim
108 words
A CARDIOTACHOMETER COMPRISING: ELECTRICAL MEANS TO CONVERT HEART BEATS INTO CORRESPONDING PULSES OF SUBSTANTIALLY FIXED WIDTH; FIRST AND SECOND CAPACITORS; CIRCUIT MEANS CONNECTED TO SAID ELECTRICAL MEANS TO ALTERNATELY CHARGE AND DISCHARGE ONE OR THE OTHER OF SAID CAPACITORS AT THE RATE OF OCCURRENCE OF SAID PULSES; CONTROL MEANS TO ALTERNATELY CONNECT SAID FIRST AND SAID SECOND CAPACITORS TO SAID CIRCUIT MEANS DURING SUCCESSIVE SAMPLING INTERVALS; AND VOLTAGE MEASURING MEANS FOR INDICATING THE ACCUMULATED CHARGE ON ONE OF SAID CAPACITORS WHILE THE OTHER OF SAID CAPACITORS IS CONNECTED TO SAID CIRCUIT MEANS AND THEREBY INDICATE THE RATE OF OCCURRENCE OF SAID HEART BEATS DURING SAID SUCCESSIVE SAMPLING INTERVALS.
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) | 1968-08-23 | 1969-02-22 | 1969-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-23 | 1973-02-22 | 1973-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-23 | 1977-02-22 | 1977-08-24 | $7700.00 | Window Closed / Lapsed |