3 May
2002
3 May
'02
5:06 p.m.
Today I picked up a wire wrap card with some strange ICs. They're 16 pin dips with
white ceramic bodies and gold lids and legs. They have the numbers 7552-1C and 7350 on
them. I believe the 7350 is a date code. There are other ICs on the card and they're
all date coded to 1973. There's also a note on the board that says that it was
modified on 7/25/74.
There's also a trademark symbol on the ICs that looks like a black box with a lower
case "i" showing through in gold. I don't think I've ever seen this
trademark before, does anyone know what company it's for? Anyone know what the ICs
might be?
Joe