William Simpson

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Edmonton, CA

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Patents Grantslast 30 patents

Information Patent Grant
Removably engaged wheelchair headrest
- Patent number 8,979,196
- Issue date Mar 17, 2015
- William Simpson
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE

Patents Applicationslast 30 patents

Information Patent Application
Removably Engaged Wheelchair Headrest
- Publication number 20120200133
- Publication date Aug 9, 2012
- William Simpson
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE