Did Lockheed invent tip tanks?

[Stephan Wilkinson]

Can anybody think of any airplane that predated the P-80 and had external tip tanks? Not talking about drop tanks, just pure tip tanks (and not the kind of "tip tanks" that are basically wing extensions filled with fuel).

The only thing I can come up with from that era, even, is the Super Constellation, but I think that postdated its jet stablemate.

It never occurred to me that Kelly Johnson might have invented tip tanks. Wonder if he patented them...