Here is an observation, your father was probably a humble man who did not brag about his patents, and did not brag about his knowledge of machinery to others. He also probably would have gotten along with LH.
If I am wrong however, he would probably be as indecent as you are on the internet, if not more so.
I only say that because my own father has been a thin skinned a$$ on the web far far longer then I have. Only difference is I have a far thicker skin then him, or you.