John Hammargren

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Medina, MN, US

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Patents Grantslast 30 patents

Information Patent Grant
Respiratory effort detection method and apparatus
- Patent number 5,944,680
- Issue date Aug 31, 1999
- Medtronic, Inc.
- Mark A. Christopherson
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Cardiac assist device having circadian muscle simulation
- Patent number 5,697,884
- Issue date Dec 16, 1997
- Medtronic, Inc.
- David Francischelli
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Cardiac assist device having muscle augementation after confirmed a...
- Patent number 5,697,952
- Issue date Dec 16, 1997
- Medtronic, Inc.
- David Francischelli
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Device and algorithm for a combined cardiomyostimulator and a cardi...
- Patent number 5,607,385
- Issue date Mar 4, 1997
- Medtronic, Inc.
- David Francischelli
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE