2N879 semiconductor manufactured by Sylvania, listed as 2N879 (circa 1979).

2N753 semiconductor manufactured by Sylvania, listed as 2N753 (circa 1979).

2N656 semiconductor manufactured by Sylvania, listed as 2N656 (circa 1979).

2N1378 semiconductor manufactured by Sylvania, listed as 2N1378 (circa 1979).

2N1241 semiconductor manufactured by Sylvania, listed as 2N1241 (circa 1979).

2N1138A semiconductor manufactured by Sylvania, listed as 2N1138A (circa 1979).

2N1023 semiconductor manufactured by Sylvania, listed as 2N1023 (circa 1979).

2N878 semiconductor manufactured by Sylvania, listed as 2N878 (circa 1979).

2N752 semiconductor manufactured by Sylvania, listed as 2N752 (circa 1979).

2N1377 semiconductor manufactured by Sylvania, listed as 2N1377 (circa 1979).

2N1240 semiconductor manufactured by Sylvania, listed as 2N1240 (circa 1979).

2N1138 semiconductor manufactured by Sylvania, listed as 2N1138 (circa 1979).

2N1022A semiconductor manufactured by Sylvania, listed as 2N1022A (circa 1979).

2N877 semiconductor manufactured by Sylvania, listed as 2N877 (circa 1979).

2N751 semiconductor manufactured by Sylvania, listed as 2N751 (circa 1979).

2N1376 semiconductor manufactured by Sylvania, listed as 2N1376 (circa 1979).

2N1239 semiconductor manufactured by Sylvania, listed as 2N1239 (circa 1979).

2N1137B semiconductor manufactured by Sylvania, listed as 2N1137B (circa 1979).

2N1022 semiconductor manufactured by Sylvania, listed as 2N1022 (circa 1979).

2N876 semiconductor manufactured by Sylvania, listed as 2N876 (circa 1979).