vintage Karlrite lamp table. stamped 1964 and 1010 on inside. can anyone tell me about it?

I picked this beauty from the trash a few years ago. i pulled it apart the other day and put a fresh wire in it and it works great and looks super cool. There are four bulbs under the table which can be switched to 1 on/3 on/ 4 on/off. It is heavy! It cleaned up nice. inside one of the pieces was stamped KARLRITE 1964 1010