2N404A semiconductor manufactured by Sylvania, listed as 2N404A (circa 1979).

2N311 semiconductor manufactured by Sylvania, listed as 2N311 (circa 1979).

2N140 semiconductor manufactured by Sylvania, listed as 2N140 (circa 1979).

2N486 semiconductor manufactured by Sylvania, listed as 2N486 (circa 1979).

2N404 semiconductor manufactured by Sylvania, listed as 2N404 (circa 1979).

2N310 semiconductor manufactured by Sylvania, listed as 2N310 (circa 1979).

2N139 semiconductor manufactured by Sylvania, listed as 2N139 (circa 1979).

1N9007 semiconductor manufactured by Sylvania, listed as 1N9007 (circa 1979).

1N9006 semiconductor manufactured by Sylvania, listed as 1N9006 (circa 1979).

1N9005 semiconductor manufactured by Sylvania, listed as 1N9005 (circa 1979).

1N9004 semiconductor manufactured by Sylvania, listed as 1N9004 (circa 1979).

1N9003 semiconductor manufactured by Sylvania, listed as 1N9003 (circa 1979).

1N9002 semiconductor manufactured by Sylvania, listed as 1N9002 (circa 1979).

1N9001 semiconductor manufactured by Sylvania, listed as 1N9001 (circa 1979).

1N8007 semiconductor manufactured by Sylvania, listed as 1N8007 (circa 1979).

1N8006 semiconductor manufactured by Sylvania, listed as 1N8006 (circa 1979).

1N8005 semiconductor manufactured by Sylvania, listed as 1N8005 (circa 1979).

1N8003 semiconductor manufactured by Sylvania, listed as 1N8003 (circa 1979).

1N8002 semiconductor manufactured by Sylvania, listed as 1N8002 (circa 1979).

1N8001 semiconductor manufactured by Sylvania, listed as 1N8001 (circa 1979).