2N756A semiconductor manufactured by Sylvania, listed as 2N756A (circa 1979).

2N659 semiconductor manufactured by Sylvania, listed as 2N659 (circa 1979).

2N1381 semiconductor manufactured by Sylvania, listed as 2N1381 (circa 1979).

2N1247 semiconductor manufactured by Sylvania, listed as 2N1247 (circa 1979).

2N1141A semiconductor manufactured by Sylvania, listed as 2N1141A (circa 1979).

2N1026 semiconductor manufactured by Sylvania, listed as 2N1026 (circa 1979).

2N881 semiconductor manufactured by Sylvania, listed as 2N881 (circa 1979).

2N756 semiconductor manufactured by Sylvania, listed as 2N756 (circa 1979).

2N658 semiconductor manufactured by Sylvania, listed as 2N658 (circa 1979).

2N1380 semiconductor manufactured by Sylvania, listed as 2N1380 (circa 1979).

2N1246 semiconductor manufactured by Sylvania, listed as 2N1246 (circa 1979).

2N1141 semiconductor manufactured by Sylvania, listed as 2N1141 (circa 1979).

2N1025 semiconductor manufactured by Sylvania, listed as 2N1025 (circa 1979).

2N880 semiconductor manufactured by Sylvania, listed as 2N880 (circa 1979).

2N754 semiconductor manufactured by Sylvania, listed as 2N754 (circa 1979).

2N657 semiconductor manufactured by Sylvania, listed as 2N657 (circa 1979).

2N1379 semiconductor manufactured by Sylvania, listed as 2N1379 (circa 1979).

2N1245 semiconductor manufactured by Sylvania, listed as 2N1245 (circa 1979).

2N1139 semiconductor manufactured by Sylvania, listed as 2N1139 (circa 1979).

2N1024 semiconductor manufactured by Sylvania, listed as 2N1024 (circa 1979).