Now, you guys know those for sure were issued to paratroops? I'm not sure which exact ones, Schrade for instance and several others. I have a wreck of one here that came from a vet. The late Jim Flavin had a full collection of them. There were also orange color handle automatic issued I think to pilots later... I just don't have the complete info the OP asks for to help him. Unless I'm misunderstanding what you two are suggesting...
Here's a thread to get started...
WWII Airborne Switchblades - EDGED WEAPONS - U.S. Militaria Forum
Info on MC-1 Parachutist Knife? - EDGED WEAPONS - U.S. Militaria Forum
WWII Schrade Cut. Co. M2 Paratrooper Automatic Knife.