740462 semiconductor manufactured by Sylvania, listed as 740462 (circa 1979).

740461 semiconductor manufactured by Sylvania, listed as 740461 (circa 1979).

740443 semiconductor manufactured by Sylvania, listed as 740443 (circa 1979).

740442 semiconductor manufactured by Sylvania, listed as 740442 (circa 1979).

740441 semiconductor manufactured by Sylvania, listed as 740441 (circa 1979).

740440 semiconductor manufactured by Sylvania, listed as 740440 (circa 1979).

740439 semiconductor manufactured by Sylvania, listed as 740439 (circa 1979).

740438 semiconductor manufactured by Sylvania, listed as 740438 (circa 1979).

740437 semiconductor manufactured by Sylvania, listed as 740437 (circa 1979).

740417 semiconductor manufactured by Sylvania, listed as 740417 (circa 1979).

740402 semiconductor manufactured by Sylvania, listed as 740402 (circa 1979).

740289 semiconductor manufactured by Sylvania, listed as 740289 (circa 1979).

740247 semiconductor manufactured by Sylvania, listed as 740247 (circa 1979).

740183 semiconductor manufactured by Sylvania, listed as 740183 (circa 1979).

7488 semiconductor manufactured by Sylvania, listed as 7488 (circa 1979).

74662 semiconductor manufactured by Sylvania, listed as 74662 (circa 1979).

74651 semiconductor manufactured by Sylvania, listed as 74651 (circa 1979).

74200 semiconductor manufactured by Sylvania, listed as 74200 (circa 1979).

741740C semiconductor manufactured by Sylvania, listed as 741740C (circa 1979).

741650C semiconductor manufactured by Sylvania, listed as 741650C (circa 1979).