2N382 semiconductor manufactured by Sylvania, listed as 2N382 (circa 1979).

2N286 semiconductor manufactured by Sylvania, listed as 2N286 (circa 1979).

2N195 semiconductor manufactured by Sylvania, listed as 2N195 (circa 1979).

2N550 semiconductor manufactured by Sylvania, listed as 2N550 (circa 1979).

2N471 semiconductor manufactured by Sylvania, listed as 2N471 (circa 1979).

2N381 semiconductor manufactured by Sylvania, listed as 2N381 (circa 1979).

2N285B semiconductor manufactured by Sylvania, listed as 2N285B (circa 1979).

2N194A semiconductor manufactured by Sylvania, listed as 2N194A (circa 1979).

2N119 semiconductor manufactured by Sylvania, listed as 2N119 (circa 1979).

2N549 semiconductor manufactured by Sylvania, listed as 2N549 (circa 1979).

2N470 semiconductor manufactured by Sylvania, listed as 2N470 (circa 1979).

2N380 semiconductor manufactured by Sylvania, listed as 2N380 (circa 1979).

2N285A semiconductor manufactured by Sylvania, listed as 2N285A (circa 1979).

2N194 semiconductor manufactured by Sylvania, listed as 2N194 (circa 1979).

2N118A semiconductor manufactured by Sylvania, listed as 2N118A (circa 1979).

2N548 semiconductor manufactured by Sylvania, listed as 2N548 (circa 1979).

2N468 semiconductor manufactured by Sylvania, listed as 2N468 (circa 1979).

2N379 semiconductor manufactured by Sylvania, listed as 2N379 (circa 1979).

2N285 semiconductor manufactured by Sylvania, listed as 2N285 (circa 1979).

2N193 semiconductor manufactured by Sylvania, listed as 2N193 (circa 1979).