1 | PWPX | Preway, Inc. | added 1/1954; eliminated 7/1956 | | NAKINA |
2 | PWPX | Prentiss Wabers Products Co. | 1/1950-1/1952; eliminated 1/1954 | | NAKINA |
3 | PWPX | Prentiss Wabers Products Co. | Jan-52 | | NRHS |
4 | PWPX | Preway, Inc. | eliminated 7/56 | | NRHS |
5 | PWPX | PREWAY, INC. [PRENTISS WABERS PRODUCTS CO.] | | | PWRC |