Inventor
VAN NIEKERK JOHANNES B
US2 patents
Patents
2 patentsUS7688222B2Mar 30, 2010
Methods, systems and devices related to road mounted indicators for providing visual indications to approaching traffic
SPOT DEVICES INC158 citations95
US7859431B2Dec 28, 2010
Methods, systems and devices related to road mounted indicators for providing visual indications to approaching traffic
SPOT DEVICES INC40 citations88