Inventor
WITHNALL CHRISTOPHER R P
CA11 patents
⚠️ This page may combine multiple inventors who share the name “WITHNALL CHRISTOPHER R P”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
RIDDELL
8 patentsUS7954177B2Jun 7, 2011
Sports helmet
RIDDELL95 citations99
US7240376B2Jul 10, 2007
Sports helmet
RIDDELL125 citations99
US6934971B2Aug 30, 2005
Football helmet
RIDDELL209 citations99
US10136692B2Nov 27, 2018
Sports helmet
RIDDELL50 citations98
US8938818B2Jan 27, 2015
Sports helmet
RIDDELL48 citations98
US6871525B2Mar 29, 2005
Method and apparatus for testing football helmets
RIDDELL118 citations97
US10932514B2Mar 2, 2021
Protective sports helmet
RIDDELL18 citations94
US10143257B2Dec 4, 2018
Protective sports helmet
RIDDELL4 citations84