I found some parts in my junk drawer that I can't identify. I'm pretty sure they're National Semiconductor hybrid circuits from 1969-1970, but I have no access to a National Hybrid Products databook. The part numbers are:
- NS NH0009C
- NS NH00012C
Both are in 12-lead TO-8 cans. Does anybody know what these are, or better yet, can point me to a datasheet?