2N750 semiconductor manufactured by Sylvania, listed as 2N750 (circa 1979).

2N655A semiconductor manufactured by Sylvania, listed as 2N655A (circa 1979).

2N1375 semiconductor manufactured by Sylvania, listed as 2N1375 (circa 1979).

2N1238 semiconductor manufactured by Sylvania, listed as 2N1238 (circa 1979).

2N1137A semiconductor manufactured by Sylvania, listed as 2N1137A (circa 1979).

2N1021A semiconductor manufactured by Sylvania, listed as 2N1021A (circa 1979).

2N871 semiconductor manufactured by Sylvania, listed as 2N871 (circa 1979).

2N749 semiconductor manufactured by Sylvania, listed as 2N749 (circa 1979).

2N655 semiconductor manufactured by Sylvania, listed as 2N655 (circa 1979).

2N1374 semiconductor manufactured by Sylvania, listed as 2N1374 (circa 1979).

2N1234 semiconductor manufactured by Sylvania, listed as 2N1234 (circa 1979).

2N1137 semiconductor manufactured by Sylvania, listed as 2N1137 (circa 1979).

2N1021 semiconductor manufactured by Sylvania, listed as 2N1021 (circa 1979).

2N870 semiconductor manufactured by Sylvania, listed as 2N870 (circa 1979).

2N748 semiconductor manufactured by Sylvania, listed as 2N748 (circa 1979).

2N654 semiconductor manufactured by Sylvania, listed as 2N654 (circa 1979).

2N1373 semiconductor manufactured by Sylvania, listed as 2N1373 (circa 1979).

2N1233 semiconductor manufactured by Sylvania, listed as 2N1233 (circa 1979).

2N1136B semiconductor manufactured by Sylvania, listed as 2N1136B (circa 1979).

2N1020 semiconductor manufactured by Sylvania, listed as 2N1020 (circa 1979).