2N2082 semiconductor manufactured by Sylvania, listed as 2N2082 (circa 1979).

2N2081A semiconductor manufactured by Sylvania, listed as 2N2081A (circa 1979).

2N2081 semiconductor manufactured by Sylvania, listed as 2N2081 (circa 1979).

2N2080A semiconductor manufactured by Sylvania, listed as 2N2080A (circa 1979).

2N2080 semiconductor manufactured by Sylvania, listed as 2N2080 (circa 1979).

2N2079A semiconductor manufactured by Sylvania, listed as 2N2079A (circa 1979).

2N2079 semiconductor manufactured by Sylvania, listed as 2N2079 (circa 1979).

2N2078A semiconductor manufactured by Sylvania, listed as 2N2078A (circa 1979).

2N2078 semiconductor manufactured by Sylvania, listed as 2N2078 (circa 1979).

2N2077A semiconductor manufactured by Sylvania, listed as 2N2077A (circa 1979).

2N2077 semiconductor manufactured by Sylvania, listed as 2N2077 (circa 1979).

2N2076A semiconductor manufactured by Sylvania, listed as 2N2076A (circa 1979).

2N2076 semiconductor manufactured by Sylvania, listed as 2N2076 (circa 1979).

2N2075A semiconductor manufactured by Sylvania, listed as 2N2075A (circa 1979).

2N2075 semiconductor manufactured by Sylvania, listed as 2N2075 (circa 1979).

2N2070 semiconductor manufactured by Sylvania, listed as 2N2070 (circa 1979).

2N2069 semiconductor manufactured by Sylvania, listed as 2N2069 (circa 1979).

2N2067W semiconductor manufactured by Sylvania, listed as 2N2067W (circa 1979).

2N2067G semiconductor manufactured by Sylvania, listed as 2N2067G (circa 1979).

2N2067B semiconductor manufactured by Sylvania, listed as 2N2067B (circa 1979).