The Cardiology Stethoscope is introduced, featuring improved acoustic performance, and more. Improvements continued over the decades.
The Cardiology Stethoscope is introduced, featuring improved acoustic performance, and more. Improvements continued over the decades.
3M™ patents Tunable Technology which enables users to hear high or low frequency sounds without repositioning the stethoscope chestpiece.
3M™ patents Tunable Technology which enables users to hear high or low frequency sounds without repositioning the stethoscope chestpiece.
Many stethoscopes received upgrades as technology advanced. The Classic II Pediatric, Cardiology III, and Lightweight II S.E. were some of them.
Many stethoscopes received upgrades as technology advanced. The Classic II Pediatric, Cardiology III, and Lightweight II S.E. were some of them.
The 3M™ Littmann® Classic III Stethoscope was introduced, featuring longer-lasting tubing that had improved resistance to skin oils and alcohol.
The 3M™ Littmann® Classic III Stethoscope was introduced, featuring longer-lasting tubing that had improved resistance to skin oils and alcohol.
3M™ Littmann® Cardiology IV Stethoscopes were introduced during 3M™ Littmann® Stethoscopes’ “50 Years of Listening” anniversary
3M™ Littmann® Cardiology IV Stethoscopes were introduced during 3M™ Littmann® Stethoscopes’ “50 Years of Listening” anniversary
In April 1967, 3M™ acquired Dr. Littmann’s company, Cardiosonics. Dr. Littmann would then work as an adviser to help further develop his invention.
In April 1967, 3M™ acquired Dr. Littmann’s company, Cardiosonics. Dr. Littmann would then work as an adviser to help further develop his invention.
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