Came across the American engineer Emil Francis Norelius who apparently worked for Holt during WW1 and designed or significantly contributed to the design
of the 1918 Holt SPGs. He also designed the M1921 Medium tank which incorporated some of the design features of the British Medium D.
Anyone else heard of this guy or know more about his work?
I suspect I may have picked up one or two of his patents as the name rings a bell, in anycase theres 16 google patents listed, mostly with no images, and 10 on the EPO site largely tractors or related from what I can see, some at least have no mention of Holt:
"Sometimes things that are not true are included in Wikipedia. While at first glance that may appear like a very great problem for Wikipedia, in reality is it not. In fact, it's a good thing." - Wikipedia.