Derek Stanley Lewan

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Dubuque, IA, US

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Patents Grantslast 30 patents

Information Patent Grant
Ergonomic crutch
- Patent number 9,289,346
- Issue date Mar 22, 2016
- Nathan Robert Demski
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE

Patents Applicationslast 30 patents

Information Patent Application
ERGONOMIC CRUTCH
- Publication number 20140116484
- Publication date May 1, 2014
- WISYS TECHNOLOGY FOUNDATION, INC.
- Nathan Robert Demski
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE