Mary Jo Johnson

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Lake Elmo, MN, US

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Patents Grantslast 30 patents

Information Patent Grant
One piece stethoscope diaphragm
- Patent number 10,398,406
- Issue date Sep 3, 2019
- 3M Innovative Properties Company
- Joseph P. Keller
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Stethoscope diaphragm
- Patent number 10,213,181
- Issue date Feb 26, 2019
- 3M Innovative Properties Company
- Joseph P. Keller
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE

Patents Applicationslast 30 patents

Information Patent Application
ONE PIECE STETHOSCOPE DIAPHRAGM
- Publication number 20200000427
- Publication date Jan 2, 2020
- 3M Innovative Properties Company
- Joseph P. Keller
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Application
ONE PIECE STETHOSCOPE DIAPHRAGM
- Publication number 20180214114
- Publication date Aug 2, 2018
- Joseph P. Keller
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Application
STETHOSCOPE DIAPHRAGM
- Publication number 20180008227
- Publication date Jan 11, 2018
- 3M Innovative Properties Company
- Joseph P. Keller
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE