2N167A semiconductor manufactured by Sylvania, listed as 2N167A (circa 1979).

2N512A semiconductor manufactured by Sylvania, listed as 2N512A (circa 1979).

2N417 semiconductor manufactured by Sylvania, listed as 2N417 (circa 1979).

2N332A semiconductor manufactured by Sylvania, listed as 2N332A (circa 1979).

2N238E semiconductor manufactured by Sylvania, listed as 2N238E (circa 1979).

2N167 semiconductor manufactured by Sylvania, listed as 2N167 (circa 1979).

2N512 semiconductor manufactured by Sylvania, listed as 2N512 (circa 1979).

2N416 semiconductor manufactured by Sylvania, listed as 2N416 (circa 1979).

2N332 semiconductor manufactured by Sylvania, listed as 2N332 (circa 1979).

2N238D semiconductor manufactured by Sylvania, listed as 2N238D (circa 1979).

2N166 semiconductor manufactured by Sylvania, listed as 2N166 (circa 1979).

2N511B semiconductor manufactured by Sylvania, listed as 2N511B (circa 1979).

2N415A semiconductor manufactured by Sylvania, listed as 2N415A (circa 1979).

2N331 semiconductor manufactured by Sylvania, listed as 2N331 (circa 1979).

2N238 semiconductor manufactured by Sylvania, listed as 2N238 (circa 1979).

2N165 semiconductor manufactured by Sylvania, listed as 2N165 (circa 1979).

2N511A semiconductor manufactured by Sylvania, listed as 2N511A (circa 1979).

2N415 semiconductor manufactured by Sylvania, listed as 2N415 (circa 1979).

2N330A semiconductor manufactured by Sylvania, listed as 2N330A (circa 1979).

2N237 semiconductor manufactured by Sylvania, listed as 2N237 (circa 1979).