2N1217 semiconductor manufactured by Sylvania, listed as 2N1217 (circa 1979).

2N1120 semiconductor manufactured by Sylvania, listed as 2N1120 (circa 1979).

2N997 semiconductor manufactured by Sylvania, listed as 2N997 (circa 1979).

2N846A semiconductor manufactured by Sylvania, listed as 2N846A (circa 1979).

2N725 semiconductor manufactured by Sylvania, listed as 2N725 (circa 1979).

2N639B semiconductor manufactured by Sylvania, listed as 2N639B (circa 1979).

2N1353 semiconductor manufactured by Sylvania, listed as 2N1353 (circa 1979).

2N1216 semiconductor manufactured by Sylvania, listed as 2N1216 (circa 1979).

2N1119 semiconductor manufactured by Sylvania, listed as 2N1119 (circa 1979).

2N996 semiconductor manufactured by Sylvania, listed as 2N996 (circa 1979).

2N846 semiconductor manufactured by Sylvania, listed as 2N846 (circa 1979).

2N723 semiconductor manufactured by Sylvania, listed as 2N723 (circa 1979).

2N639A semiconductor manufactured by Sylvania, listed as 2N639A (circa 1979).

2N1352 semiconductor manufactured by Sylvania, listed as 2N1352 (circa 1979).

2N1215 semiconductor manufactured by Sylvania, listed as 2N1215 (circa 1979).

2N1118A semiconductor manufactured by Sylvania, listed as 2N1118A (circa 1979).

2N995A semiconductor manufactured by Sylvania, listed as 2N995A (circa 1979).

2N844 semiconductor manufactured by Sylvania, listed as 2N844 (circa 1979).

2N722A semiconductor manufactured by Sylvania, listed as 2N722A (circa 1979).

2N639 semiconductor manufactured by Sylvania, listed as 2N639 (circa 1979).