It's interesting to see that, although what we call now a "microprocessor" had already been invented, in that paper they use the same word to describe a CPU implemented using microcode (and not a very small processor that fits in a single chip).

Here is a picture of the author of that paper working on the CADR machine (the successor to the CONS machine): http://www.computerhistory.org/chess/stl-431614f64ea3e/