The label does say "Bulldog Electric Products of Los Angeles". There is a number of mid 1960's homes locally W/ Bulldog Electric all in one panels using EQ frame breakers (including my neighbor) around. I recall reading that I-T-E Circuit Breaker Co. bought Bulldog in the 1950's but,could be wrong, it would not be the first time and it wont be the last.
PS Nobody has commented about the duplex receptacle to the left
I had better duck for cover on that one. I forgot the meter jaws are stamped "BEPLA".