Charles Garrett;
after I signed off, I started thinking about your question again, my 1st answer refers to
the Walden's Tomahawk T-socket wrench with 3 built on sockets.
going back and rereading your question, L-handle.
in a 1952 ad, they show 2 or 3 sets of socket sets with the hex, L shaped handle.
they registered the Tomahawk trademark for some of their tools.
I hope that this helps. Frank