Home made was my thought too because the globe looks like an off the shelf part.
Pictures would help.
Mostly likely designed by Albert Green, Owner, Clover Lamp.*
Are you connected to the Greens? Do you have any more info or catalogs or trade materials?
Can we see a pic of the whole lamp?
Isn't that sort of like trying to figure out who manufactured a fake Rolex?
You aren't missing anything. It doesn't lock into place. It just sits on the base.
I can think of a dozen off the top of my head but I bet a new poster will register just to post a link to a US based
It's a period knock off of the Eames chair, designed by committee looking to cash in on a popular design.