In 1982, Jim received the only US Patent ever issued for a “concept” of precision rocker arm geometry. The “MID-LIFT” Patent (4,365,785) spelled out the maximum efficiency of perpendicular geometry taken at the mid-lift point of motion, when the very least amount of motion was used in converting linear motion from the cam into radial motion through the rocker arm.

In July, 1993, Miller Engineering Inc (MEI) was founded, solely to address making professional level rocker arms with MID-LIFT geometry.

In January, 1996, Precision Valve Systems (PVS) was founded to use a combination of international sourcing and domestic assembly in bringing a more affordable, precision MID-LIFT rocker arm to the market that engine builders could sell, making a reasonable profit in doing so.

October 1, 1996, US Patent 5,560,265, was issued. A rocker arm mounting stud assembly having a rocker arm mounting stud with adjustable rocker arm fixture mounting for use with a matching trunnion. Further provided is a radius roller tip rocker arm providing a third dimension principle by making the contact point of the diameter of the roller tip, a radius, lean on its pivoting access to control misalignment away from a two dimensional plane.

January 28, 1997, US Patent 5,596,958, was issued. The bridge support system eliminates the compound geometry angular placement of valves with a rigid support structure using a common or segmented shaft for securing angular disposed rocker arms to accommodate the offset geometry.

March 28, 2000, US Patent 6,041,750, was issued. A bridge top secures the rocker arm shaft in a free floating manner by bolting of the bridge base directly to the cylinder head as well as the bridge top which is also bolted to the cylinder head by use of through apertures located in the bridge base. The invention includes the teaching of offset rocker arms mountable to the rocker arm shaft to accommodate the angular valve placement.

March, 2006, MILLER PRODUCTS GROUP (MPG) is founded to replace the original PVS and consolidate accessory products and multi-tier manufacturing from offices MEI managed abroad, which was key to low costs for the previous PVS product group which used German steel and Asian aluminum, even though final work was done at the MEI facilities in Florida. In 2008 MPG acquired the assets of MEI and PVS.