A little bit of research found that ....
Collin Bros. ( 1970 -1973) sold, became Bowen Knife Co. , Atlanta GA, (1973 to ? )
Knives, reportedly manufactured for Bowen, by Camillus located in Camillus NY
Edit:
Bowen is still around
Looks like they sell a belt, with a buckle, that doubles as a hidden little dagger type knife
I personally would not try to board an airplane with that belt on