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Stethoscope transducer
Patent #: 3989895
Issued on: 11/02/1976
Inventor: O'Daniel, Sr.
Heated stethoscope
Patent #: 4007806
Issued on: 02/15/1977
Inventor: Nobles, Jr.
Phonostethoscope conversion unit for amplification and clarification of corporeal sounds
Patent #: 4048444
Issued on: 09/13/1977
Inventor: Giampapa
Stethoscope
Patent #: 4071694
Issued on: 01/31/1978
Inventor: Pfeiffer
Two-way stethoscope for direct and amplified sound
Patent #: 4072822
Issued on: 02/07/1978
Inventor: Yamada
Electronic stethoscope
Patent #: 4170717
Issued on: 10/09/1979
Inventor: Walshe
Circuit for monitoring a heart and for effecting cardioversion of a needy heart
Patent #: 4184493
Issued on: 01/22/1980
Inventor: Langer , et al.
Stethoscope
Patent #: 4200169
Issued on: 04/29/1980
Inventor: MacDonald, III , et al.
Method and apparatus for discrimination and detection of heart sounds
Patent #: 4220160
Issued on: 09/02/1980
Inventor: Kimball , et al.
Electronic stethoscope
Patent #: 4254302
Issued on: 03/03/1981
Inventor: Walshe
Stethoscope with probe sound pick-up and resonant cavity amplification
Patent #: 4270627
Issued on: 06/02/1981
Inventor: Hill
Noise attenuating stethoscope
Patent #: 4299303
Issued on: 11/10/1981
Inventor: Clark
Detection and monitoring device
Patent #: 4306567
Issued on: 12/22/1981
Inventor: Krasner
Electronic pick-up device for transducing electrical energy and sound energy of the heart
Patent #: 4362164
Issued on: 12/07/1982
Inventor: Little , et al.
Stethoscope having means for measuring pulse frequency
Patent #: 4377727
Issued on: 03/22/1983
Inventor: Schwalbach
Stethoscope with improved resonant cavity amplification
Patent #: 4387784
Issued on: 06/14/1983
Inventor: Hill
Stethoscope-type recording system with stretched-in-time playback
Patent #: 4424815
Issued on: 01/10/1984
Inventor: Kuntz
Portable digital heart rate meter/stethoscope
Patent #: 4436096
Issued on: 03/13/1984
Inventor: Dyck , et al.
Differential stethoscope
Patent #: 4438772
Issued on: 03/27/1984
Inventor: Slavin
Tunable stethoscope
Patent #: 4440258
Issued on: 04/03/1984
Inventor: Packard
Electronic stethoscope for monitoring the operation of a prosthetic valve implanted in a patient's heart
Patent #: 4498188
Issued on: 02/05/1985
Inventor: Hofer
Stethoscope with removable insert
Patent #: 4502562
Issued on: 03/05/1985
Inventor: Nelson
Patient monitor for providing respiration and electrocardiogram signals
Patent #: 4506678
Issued on: 03/26/1985
Inventor: Russell , et al.
Sound monitoring apparatus
Patent #: 4528689
Issued on: 07/09/1985
Inventor: Katz
Compact hybrid stethoscope
Patent #: 4528690
Issued on: 07/09/1985
Inventor: Sedgwick
Electronic stethoscope with automatic power shut-off
Patent #: 4534058
Issued on: 08/06/1985
Inventor: Hower
Electronic stethoscope
Patent #: 4594731
Issued on: 06/10/1986
Inventor: Lewkowicz
Electronic stethoscope
Patent #: 4598417
Issued on: 07/01/1986
Inventor: Deno
Electronic stethoscope
Patent #: 4618986
Issued on: 10/21/1986
Inventor: Hower
Esophageal stethoscope and vital signs monitor system
Patent #: 4619268
Issued on: 10/28/1986
Inventor: Uphold , et al.
Stethoscope with high frequency filter
Patent #: 4633971
Issued on: 01/06/1987
Inventor: Robbins
Apparatus for beat buffering techniques varified by arrhythmias detection for stopaction frames of cardiac function
Patent #: 4649930
Issued on: 03/17/1987
Inventor: Groch , et al.
Stethoscope with image of periodically expanding and contracting heart
Patent #: 4672975
Issued on: 06/16/1987
Inventor: Sirota
Lung sound cancellation method and apparatus
Patent #: 4672977
Issued on: 06/16/1987
Inventor: Kroll
Computerized stethoscopic analysis system and method
Patent #: 4720866
Issued on: 01/19/1988
Inventor: Elias , et al.
Multi-functional radio/wire stethoscopic apparatus
Patent #: 4723555
Issued on: 02/09/1988
Inventor: Shue
Electronic ausculscope
Patent #: 4731849
Issued on: 03/15/1988
Inventor: Bloomfield, III
Esophageal stethoscope and vital signs monitor system
Patent #: 4763663
Issued on: 08/16/1988
Inventor: Uphold , et al.
Real time multitask electronic stethoscopy system
Patent #: 4770189
Issued on: 09/13/1988
Inventor: Shyu
High sensitivity stethoscopic system and method
Patent #: 4777961
Issued on: 10/18/1988
Inventor: Saltzman
Electronic sound amplifier stethoscope with visual heart beat and blood flow indicator
Patent #: 4783813
Issued on: 11/08/1988
Inventor: Kempka
Stethoscope having pseudostereophonic binaural enhancement
Patent #: 4783814
Issued on: 11/08/1988
Inventor: Foley
Electronic stethoscope system and method
Patent #: 4792145
Issued on: 12/20/1988
Inventor: Eisenberg , et al.
Clip-collar for security badges
Patent #: 4795069
Issued on: 01/03/1989
Inventor: Ferrill
Acoustical stethoscope with electrical filter
Patent #: 4821327
Issued on: 04/11/1989
Inventor: Furugard , et al.
Compressible ear tip
Patent #: 4852684
Issued on: 08/01/1989
Inventor: Packard
Electronic stethoscopic apparatus
Patent #: 4878501
Issued on: 11/07/1989
Inventor: Shue
Acoustical amplifying stethoscope
Patent #: 4903794
Issued on: 02/27/1990
Inventor: Klippert, et al.
Compressible ear tip
Patent #: 4913259
Issued on: 04/03/1990
Inventor: Packard
High resolution stethoscopic apparatus
Patent #: 4940023
Issued on: 07/10/1990
Inventor: Shue
Dynamic spectral phonocardiograph
Patent #: 4967760
Issued on: 11/06/1990
Inventor: Bennett, Jr., et al.
Stethoscope with pulse rate display
Patent #: 4972841
Issued on: 11/27/1990
Inventor: Iguchi
Electronically augmented stethoscope with timing sound
Patent #: 5003605
Issued on: 03/26/1991
Inventor: Phillipps, et al.
Intelligent stethoscope
Patent #: 5010889
Issued on: 04/30/1991
Inventor: Bredesen, et al.
Machine for simultaneously manufacturing two continuous cigarette rods
Patent #: 5022415
Issued on: 06/11/1991
Inventor: Belvederi, et al.
Recording, digital stethoscope for identifying PCG signatures
Patent #: 5025809
Issued on: 06/25/1991
Inventor: Johnson, et al.
Method and apparatus for detecting, analyzing and recording cardiac rhythm disturbances
Patent #: 5027824
Issued on: 07/02/1991
Inventor: Dougherty, et al.
Self-contained stethoscope transmitter
Patent #: 5027825
Issued on: 07/02/1991
Inventor: Phelps, Sr., et al.
Lung sound detection system and method
Patent #: 5165417
Issued on: 11/24/1992
Inventor: Murphy, Jr.
Ergonometric stethoscope chestpiece
Patent #: 5204500
Issued on: 04/20/1993
Inventor: Dufresne, et al.
Visual display stethoscope
Patent #: 5213108
Issued on: 05/25/1993
Inventor: Bredesen, et al.
Intelligent stethoscope
Patent #: 5218969
Issued on: 06/15/1993
Inventor: Bredesen, et al.
Method and system for analysis of body sounds
Patent #: 5301679
Issued on: 04/12/1994
Inventor: Taylor
Electronic stethoscope having binaural earpiece
Patent #: 5347583
Issued on: 09/13/1994
Inventor: Dieken, et al.
Electronic stethoscope having battery carriage
Patent #: 5367575
Issued on: 11/22/1994
Inventor: Dieken, et al.
Stethoscope isolation system
Patent #: 5466898
Issued on: 11/14/1995
Inventor: Gilbert, et al.
Electronic stethoscope
Patent #: 5557681
Issued on: 09/17/1996
Inventor: Thomasson
Headset for electronic stethoscope
Patent #: 5561275
Issued on: 10/01/1996
Inventor: Savage, et al.
Stethoscope ruler device
Patent #: 5663533
Issued on: 09/02/1997
Inventor: Judge
Apparatus and methods for analyzing heart sounds
Patent #: 5687738
Issued on: 11/18/1997
Inventor: Shapiro, et al.
Wireless headphone with a spring-biased activating power switch
Patent #: 5708725
Issued on: 01/13/1998
Inventor: Ito
Combined electronic acoustical stethoscope
Patent #: 5774563
Issued on: 06/30/1998
Inventor: DesLauriers, et al.
Universal stethoscope amplifier with graphic equalization and teaching and learning ports Patent #: 5832093
Issued on: 11/03/1998
Inventor: Bernstein, et al.
March 17, 2018. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
