US3338234A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heart activity detector and display device
Assignee: Individual
•
Filing: 1964-06-09
•
Granted: 1967-08-29
•
Expires: 1984-06-09
Abstract
No abstract record available.
Inventors
- 👤 Benjamin B Kleinerman
- 👤 Anthony S Valente
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:05
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/02; A61B5/024; A61B5/0245; A61B5/74; A61B5/7405; A61B5/7415; Y; Y10; Y10S; Y10S128/00; Y10S128/901
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
122 words
A PORTABLE DEVICE FOR THE AUDIBLE OBSERVATION OF HEART ACTIVITY COMPRISING A DIRECT CURRENT BATTERY POWER SUPPLY, SIGNAL-INPUT MEANS ADAPTED TO DERIVE HEARTBEAT SIGNALS FORM A PATIENT, TRANSISTORIZED AMPLIFICATION MEANS ENERGIZED FROM SAID POWER SUPPLY, AN INPUT CIRCUIT CONNECTED TO SAID AMPLIFICATION MEANS AND TO SAID SIGNAL-INPUT MEANS FOR APPLYING SAID HEARTBEAT SIGNALS TO SAID AMPLIFICATION MEANS, A TONE GENERATOR CONNECTED TO SAID AMPLIFICATION MEANS AND RESPONSIVE TO THE APPLICATION OF A HEARTBEAT SIGNAL TO SAID AMPLIFICATIONS MEANS FOR PROVIDING A TRAIN OF PULSES AT A REPETITION RATE AND RHYTHM SYNCHRONOUS WITH A SELECTED PEAK OF SUCCESSIVE AMPLIFIED HEARTBEAT SIGNALS AND OF SUBSTANTIALLY CONSTANT AMPLITUDE, AND AUDIO OUTPUT MEANS CONNECTED TO SAID TONE GENERATOR FOR PROVIDING AUDIBLE BEATS AT SAID REPETITION RATE.
Claim 2
Dependent Claim
122 words
A PORTABLE DEVICE FOR THE AUDIBLE OBSERVATION OF HEART ACTIVITY COMPRISING A DIRECT CURRENT BATTERY POWER SUPPLY, SIGNAL-INPUT MEANS ADAPTED TO DERIVE HEARTBEAT SIGNALS FORM A PATIENT, TRANSISTORIZED AMPLIFICATION MEANS ENERGIZED FROM SAID POWER SUPPLY, AN INPUT CIRCUIT CONNECTED TO SAID AMPLIFICATION MEANS AND TO SAID SIGNAL-INPUT MEANS FOR APPLYING SAID HEARTBEAT SIGNALS TO SAID AMPLIFICATION MEANS, A TONE GENERATOR CONNECTED TO SAID AMPLIFICATION MEANS AND RESPONSIVE TO THE APPLICATION OF A HEARTBEAT SIGNAL TO SAID AMPLIFICATIONS MEANS FOR PROVIDING A TRAIN OF PULSES AT A REPETITION RATE AND RHYTHM SYNCHRONOUS WITH A SELECTED PEAK OF SUCCESSIVE AMPLIFIED HEARTBEAT SIGNALS AND OF SUBSTANTIALLY CONSTANT AMPLITUDE, AND AUDIO OUTPUT MEANS CONNECTED TO SAID TONE GENERATOR FOR PROVIDING AUDIBLE BEATS AT SAID REPETITION RATE.
References Cited (Backward Citations)
US3027891A
Cited
US3195534A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-08-28 | 1971-02-27 | 1971-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-28 | 1975-02-27 | 1975-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-28 | 1979-02-27 | 1979-08-29 | $7700.00 | Window Closed / Lapsed |