2N3315 semiconductor manufactured by Sylvania, listed as 2N3315 (circa 1979).

2N3314 semiconductor manufactured by Sylvania, listed as 2N3314 (circa 1979).

2N3313 semiconductor manufactured by Sylvania, listed as 2N3313 (circa 1979).

2N3312 semiconductor manufactured by Sylvania, listed as 2N3312 (circa 1979).

2N3311 semiconductor manufactured by Sylvania, listed as 2N3311 (circa 1979).

2N3310 semiconductor manufactured by Sylvania, listed as 2N3310 (circa 1979).

2N3308 semiconductor manufactured by Sylvania, listed as 2N3308 (circa 1979).

2N3307 semiconductor manufactured by Sylvania, listed as 2N3307 (circa 1979).

2N3306 semiconductor manufactured by Sylvania, listed as 2N3306 (circa 1979).

2N3305 semiconductor manufactured by Sylvania, listed as 2N3305 (circa 1979).

2N3304 semiconductor manufactured by Sylvania, listed as 2N3304 (circa 1979).

2N3302 semiconductor manufactured by Sylvania, listed as 2N3302 (circa 1979).

2N3301 semiconductor manufactured by Sylvania, listed as 2N3301 (circa 1979).

2N3300S semiconductor manufactured by Sylvania, listed as 2N3300S (circa 1979).

2N3300 semiconductor manufactured by Sylvania, listed as 2N3300 (circa 1979).

2N3299S semiconductor manufactured by Sylvania, listed as 2N3299S (circa 1979).

2N3299 semiconductor manufactured by Sylvania, listed as 2N3299 (circa 1979).

2N3294 semiconductor manufactured by Sylvania, listed as 2N3294 (circa 1979).

2N3293 semiconductor manufactured by Sylvania, listed as 2N3293 (circa 1979).

2N3292 semiconductor manufactured by Sylvania, listed as 2N3292 (circa 1979).