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Patent US3343528A successfully refreshed from Google Patents.
US3343528A
Expired / Lapsed
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Electrocardiographic switching system
Assignee: Individual
•
Filing: 1964-10-09
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Granted: 1967-09-26
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Expires: 1984-10-09
Abstract
No abstract record available.
Inventors
- 👤 Lindsay J Kirkham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:13
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/0002; A61B5/0004; A61B5/0006; Y; Y10; Y10S; Y10S128/00; Y10S128/903
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
145 words
IN A ELECTROCARDIOGRAPHIC TRANSMISSION SYSTEM, TRANSMISSION MEANS HAVING AN INPUT TERMINAL, A PLURALITY OF ELECTRODES ADAPTED TO BE MOUNTED ON SPACED PORTIONS OF A LIVING BODY; A PLURALITY OF R-C TIMING CIRCUITS, EACH HAVING A CHARGEABLE CAPACITOR AND HAVING SUCCESSIVELY SLOWER CHARGING RATES, A SOURCE OF CHARGING POTENTIAL CONNECTED TO SAID TIMING CIRCUITS, A NORMALLY NON-CONDUCTING ELECTRONIC SWITCH ASSOCIATED WITH EACH TIMING CIRCUIT, MEANS TO SEQUENTIALLY RENDER THE ELECTRONIC SWITCHES CONDUCTING RESPONSIVE TO THE RECEPTION OF RESPECTIVE PREDETERMINED CHARGES BY THE CAPACITORS, MEANS TO SUCCESSIVELY CONNECT THE ELECTRODES TO SAID INPUT TERMINAL RESPONSIVE TO THE CONDUCTION OF THE RESPECTIVE ELECTRONIC SWITCHES MEANS TO DISCHARGE EACH CAPACITOR RESPONSIVE TO THE CONDUCTION OF ITS ASSOCIATED ELECTRONIC SWITCH, AND MEANS TO RESTORE ALL THE ELECTRONIC SWITCHES TO NON-CONDUCTING CONDITIONS RESPONSIVE TO THE CONDUCTION OF THE ELECTRONIC SWITCH ASSOCIATED WITH THE TIMING CIRCUIT HAVING THE SLOW EST CHARGING RATE.
Claim 2
Dependent Claim
145 words
IN A ELECTROCARDIOGRAPHIC TRANSMISSION SYSTEM, TRANSMISSION MEANS HAVING AN INPUT TERMINAL, A PLURALITY OF ELECTRODES ADAPTED TO BE MOUNTED ON SPACED PORTIONS OF A LIVING BODY; A PLURALITY OF R-C TIMING CIRCUITS, EACH HAVING A CHARGEABLE CAPACITOR AND HAVING SUCCESSIVELY SLOWER CHARGING RATES, A SOURCE OF CHARGING POTENTIAL CONNECTED TO SAID TIMING CIRCUITS, A NORMALLY NON-CONDUCTING ELECTRONIC SWITCH ASSOCIATED WITH EACH TIMING CIRCUIT, MEANS TO SEQUENTIALLY RENDER THE ELECTRONIC SWITCHES CONDUCTING RESPONSIVE TO THE RECEPTION OF RESPECTIVE PREDETERMINED CHARGES BY THE CAPACITORS, MEANS TO SUCCESSIVELY CONNECT THE ELECTRODES TO SAID INPUT TERMINAL RESPONSIVE TO THE CONDUCTION OF THE RESPECTIVE ELECTRONIC SWITCHES MEANS TO DISCHARGE EACH CAPACITOR RESPONSIVE TO THE CONDUCTION OF ITS ASSOCIATED ELECTRONIC SWITCH, AND MEANS TO RESTORE ALL THE ELECTRONIC SWITCHES TO NON-CONDUCTING CONDITIONS RESPONSIVE TO THE CONDUCTION OF THE ELECTRONIC SWITCH ASSOCIATED WITH THE TIMING CIRCUIT HAVING THE SLOW EST CHARGING RATE.
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) | 1970-09-25 | 1971-03-27 | 1971-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-25 | 1975-03-27 | 1975-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-25 | 1979-03-27 | 1979-09-26 | $7700.00 | Window Closed / Lapsed |