2N162A semiconductor manufactured by Sylvania, listed as 2N162A (circa 1979).

2N507 semiconductor manufactured by Sylvania, listed as 2N507 (circa 1979).

2N413A semiconductor manufactured by Sylvania, listed as 2N413A (circa 1979).

2N328B semiconductor manufactured by Sylvania, listed as 2N328B (circa 1979).

2N235A semiconductor manufactured by Sylvania, listed as 2N235A (circa 1979).

2N162 semiconductor manufactured by Sylvania, listed as 2N162 (circa 1979).

2N506 semiconductor manufactured by Sylvania, listed as 2N506 (circa 1979).

2N413 semiconductor manufactured by Sylvania, listed as 2N413 (circa 1979).

2N328A semiconductor manufactured by Sylvania, listed as 2N328A (circa 1979).

2N235 semiconductor manufactured by Sylvania, listed as 2N235 (circa 1979).

2N161A semiconductor manufactured by Sylvania, listed as 2N161A (circa 1979).

2N505 semiconductor manufactured by Sylvania, listed as 2N505 (circa 1979).

2N412 semiconductor manufactured by Sylvania, listed as 2N412 (circa 1979).

2N328 semiconductor manufactured by Sylvania, listed as 2N328 (circa 1979).

2N234A semiconductor manufactured by Sylvania, listed as 2N234A (circa 1979).

2N161 semiconductor manufactured by Sylvania, listed as 2N161 (circa 1979).

2N504 semiconductor manufactured by Sylvania, listed as 2N504 (circa 1979).

2N411 semiconductor manufactured by Sylvania, listed as 2N411 (circa 1979).

2N327B semiconductor manufactured by Sylvania, listed as 2N327B (circa 1979).

2N234 semiconductor manufactured by Sylvania, listed as 2N234 (circa 1979).