And here is some research you missed. This language was inserted to exclude patents on perpetual motion machines and the like.
I have three patents and was never asked to provide a working prototype. Unless the patent office is 100% sure it WON"t work (as in perpetual motion machines) they will grant a patent.
So reading the 4 patents that SWET has, all have had working prototypes?
How funny.
I have no humble opinions, but I do have opinions and those are what I express in my posts. BUT...I have been wrong before and likely will be wrong again so do your own research and don't blame me if you are too lazy to do so.