2N3445 semiconductor manufactured by Sylvania, listed as 2N3445 (circa 1979).

2N3443 semiconductor manufactured by Sylvania, listed as 2N3443 (circa 1979).

2N3442 semiconductor manufactured by Sylvania, listed as 2N3442 (circa 1979).

2N3441 semiconductor manufactured by Sylvania, listed as 2N3441 (circa 1979).

2N3440 semiconductor manufactured by Sylvania, listed as 2N3440 (circa 1979).

2N3438 semiconductor manufactured by Sylvania, listed as 2N3438 (circa 1979).

2N3437 semiconductor manufactured by Sylvania, listed as 2N3437 (circa 1979).

2N3436 semiconductor manufactured by Sylvania, listed as 2N3436 (circa 1979).

2N3428 semiconductor manufactured by Sylvania, listed as 2N3428 (circa 1979).

2N3427 semiconductor manufactured by Sylvania, listed as 2N3427 (circa 1979).

2N3417 semiconductor manufactured by Sylvania, listed as 2N3417 (circa 1979).

2N3416 semiconductor manufactured by Sylvania, listed as 2N3416 (circa 1979).

2N3415 semiconductor manufactured by Sylvania, listed as 2N3415 (circa 1979).

2N3414 semiconductor manufactured by Sylvania, listed as 2N3414 (circa 1979).

2N3412 semiconductor manufactured by Sylvania, listed as 2N3412 (circa 1979).

2N3407 semiconductor manufactured by Sylvania, listed as 2N3407 (circa 1979).

2N3404 semiconductor manufactured by Sylvania, listed as 2N3404 (circa 1979).

2N3403 semiconductor manufactured by Sylvania, listed as 2N3403 (circa 1979).

2N3402 semiconductor manufactured by Sylvania, listed as 2N3402 (circa 1979).

2N3401 semiconductor manufactured by Sylvania, listed as 2N3401 (circa 1979).