AMD bit-slice machines

On the topic of bit-slices, and an earlier thread which mentioned 'pre-announced chips that never made it into production': The last quarter of the 1975 Fairchild CMOS databook is dedicated to a section titled "Products Planned for 1975" and all the sheets in the section are stamped "Preliminary". Most of the devices made it into the standard 4000-series, but the ones I always found rather curious were a group of devices: 34703: 16*4 parallel/serial FIFO 34704: data-path switch, 4-bit wide 34705: arithmetic logic register stack, 4-bit wide 34706: 16*4 FILO program stack 34707: data access register, 4-bit wide 34710: 16*4 clocked RAM which seem to be intended for implementing CMOS-based bit-slice processors. I never saw or heard about the devices anywhere else. I speculate it's one of those places where Fairchild missed the boat (there's a rather limited market for building bit-slice processors from multiple chips and slow CMOS in the era of the microprocessor).