1N4499 semiconductor manufactured by Sylvania, listed as 1N4499 (circa 1979).

1N4412A semiconductor manufactured by Sylvania, listed as 1N4412A (circa 1979).

1N5070 semiconductor manufactured by Sylvania, listed as 1N5070 (circa 1979).

1N4997 semiconductor manufactured by Sylvania, listed as 1N4997 (circa 1979).

1N4857 semiconductor manufactured by Sylvania, listed as 1N4857 (circa 1979).

1N4763A semiconductor manufactured by Sylvania, listed as 1N4763A (circa 1979).

1N4685 semiconductor manufactured by Sylvania, listed as 1N4685 (circa 1979).

1N4496 semiconductor manufactured by Sylvania, listed as 1N4496 (circa 1979).

1N4412 semiconductor manufactured by Sylvania, listed as 1N4412 (circa 1979).

1N5069 semiconductor manufactured by Sylvania, listed as 1N5069 (circa 1979).

1N4991 semiconductor manufactured by Sylvania, listed as 1N4991 (circa 1979).

1N4856B semiconductor manufactured by Sylvania, listed as 1N4856B (circa 1979).

1N4763 semiconductor manufactured by Sylvania, listed as 1N4763 (circa 1979).

1N4684 semiconductor manufactured by Sylvania, listed as 1N4684 (circa 1979).

1N4495 semiconductor manufactured by Sylvania, listed as 1N4495 (circa 1979).

1N4411B semiconductor manufactured by Sylvania, listed as 1N4411B (circa 1979).

1N5068 semiconductor manufactured by Sylvania, listed as 1N5068 (circa 1979).

1N4989 semiconductor manufactured by Sylvania, listed as 1N4989 (circa 1979).

1N4856A semiconductor manufactured by Sylvania, listed as 1N4856A (circa 1979).

1N4762A semiconductor manufactured by Sylvania, listed as 1N4762A (circa 1979).