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Here is the abstract from the patent
A combustion chamber design layout of grooves or channels or passages formed in the squish band to further enhance turbulence in the charge prior to ignition as compared to existing designs with squish bands or hemispherical layouts in I.C. Engines. These grooves or channels or passages after ignition direct the flame front to cause multipoint ignition during the combustion cycle resulting in the following distinct advantages over existing designs in practice. First, quicker and complete clean burn combustion; second, lower operating temperatures due to the higher flame velocities; third, enhanced torque and power through the entire range resulting in better fuel economy with lower Emissions; and fourth, smoother engine operation through the entire range enhancing engine life.

I did this mod a while ago in a Moki gas engine, while searching for ways to make it run smoothly on glow fuel. While it did help to some degree, the engine soon succumbed due to a failing big end. Glow ignition placed too heavy a loads on the crank pin.