1N4709 semiconductor manufactured by Sylvania, listed as 1N4709 (circa 1979).

1N4536 semiconductor manufactured by Sylvania, listed as 1N4536 (circa 1979).

1N4420A semiconductor manufactured by Sylvania, listed as 1N4420A (circa 1979).

1N5094 semiconductor manufactured by Sylvania, listed as 1N5094 (circa 1979).

1N5014 semiconductor manufactured by Sylvania, listed as 1N5014 (circa 1979).

1N4896 semiconductor manufactured by Sylvania, listed as 1N4896 (circa 1979).

1N4794 semiconductor manufactured by Sylvania, listed as 1N4794 (circa 1979).

1N4708 semiconductor manufactured by Sylvania, listed as 1N4708 (circa 1979).

1N4535 semiconductor manufactured by Sylvania, listed as 1N4535 (circa 1979).

1N4420 semiconductor manufactured by Sylvania, listed as 1N4420 (circa 1979).

1N5093 semiconductor manufactured by Sylvania, listed as 1N5093 (circa 1979).

1N5013A semiconductor manufactured by Sylvania, listed as 1N5013A (circa 1979).

1N4889 semiconductor manufactured by Sylvania, listed as 1N4889 (circa 1979).

1N4792A semiconductor manufactured by Sylvania, listed as 1N4792A (circa 1979).

1N4707 semiconductor manufactured by Sylvania, listed as 1N4707 (circa 1979).

1N4534 semiconductor manufactured by Sylvania, listed as 1N4534 (circa 1979).

1N4419B semiconductor manufactured by Sylvania, listed as 1N4419B (circa 1979).

1N5092 semiconductor manufactured by Sylvania, listed as 1N5092 (circa 1979).

1N5013 semiconductor manufactured by Sylvania, listed as 1N5013 (circa 1979).

1N4884 semiconductor manufactured by Sylvania, listed as 1N4884 (circa 1979).