OK, my two cents on the ATFP and AMPTP logos...
It was in the closing credits of
Batman with West and Ward on ABC that I first remember noticing the AMPTP oval. I don't remember if I first saw
Batman in early 1966 when it premiered (I turned 5 that summer), but I do remember seeing it in first run on ABC (and I also remember wondering, even in 1967, why the Dynamic Duo viewed Batgirl as an unwelcome intruder.

)
Now, the ATFP square... I don't remember if I ever saw it in prime time first run. Ditto for the NAB logo before it was modified to say "Television Code".
As for the RCA logos... the most surreal depiction of the later RCA logo I ever beheld, I beheld on a 1980 day trip to midtown NYC from my small college in east central PA. I looked up from somewhere on the edge of Rockefeller Center towards the top of 30 Rock - this was in the daytime - and I could make out the neon(?) lined 1968 RCA logo atop 30 Rock. Didn't the "RCA" atop 30 Rock hold the Guinness record for highest advertising sign above street level?
Now as for the quaint circular RCA logo, that it was changed in 1968 meant that the first pressings of Jefferson Airplane's "Somebody to Love" and "White Rabbit", both from 1967, would have sported the old logo. Rather incongruous in retrospect artwise. Hopefully YKWIM.
This is a good thread.
ixnay