2N4387 semiconductor manufactured by Sylvania, listed as 2N4387 (circa 1979).

2N4381 semiconductor manufactured by Sylvania, listed as 2N4381 (circa 1979).

2N4360 semiconductor manufactured by Sylvania, listed as 2N4360 (circa 1979).

2N4359 semiconductor manufactured by Sylvania, listed as 2N4359 (circa 1979).

2N4356 semiconductor manufactured by Sylvania, listed as 2N4356 (circa 1979).

2N4355 semiconductor manufactured by Sylvania, listed as 2N4355 (circa 1979).

2N4354 semiconductor manufactured by Sylvania, listed as 2N4354 (circa 1979).

2N4353 semiconductor manufactured by Sylvania, listed as 2N4353 (circa 1979).

2N4352 semiconductor manufactured by Sylvania, listed as 2N4352 (circa 1979).

2N4351 semiconductor manufactured by Sylvania, listed as 2N4351 (circa 1979).

2N4348 semiconductor manufactured by Sylvania, listed as 2N4348 (circa 1979).

2N4347 semiconductor manufactured by Sylvania, listed as 2N4347 (circa 1979).

2N4346 semiconductor manufactured by Sylvania, listed as 2N4346 (circa 1979).

2N4340 semiconductor manufactured by Sylvania, listed as 2N4340 (circa 1979).

2N4339 semiconductor manufactured by Sylvania, listed as 2N4339 (circa 1979).

2N4338 semiconductor manufactured by Sylvania, listed as 2N4338 (circa 1979).

2N4314 semiconductor manufactured by Sylvania, listed as 2N4314 (circa 1979).

2N4313 semiconductor manufactured by Sylvania, listed as 2N4313 (circa 1979).

2N4304 semiconductor manufactured by Sylvania, listed as 2N4304 (circa 1979).

2N4303 semiconductor manufactured by Sylvania, listed as 2N4303 (circa 1979).