2N673 semiconductor manufactured by Allied Electronics, listed as 2N673 (circa 1964).

2N672 semiconductor manufactured by Allied Electronics, listed as 2N672 (circa 1964).

2N670 semiconductor manufactured by Allied Electronics, listed as 2N670 (circa 1964).

2N393 semiconductor manufactured by Allied Electronics, listed as 2N393 (circa 1964).

2N346 semiconductor manufactured by Allied Electronics, listed as 2N346 (circa 1964).

2N345 semiconductor manufactured by Allied Electronics, listed as 2N345 (circa 1964).

2N344 semiconductor manufactured by Allied Electronics, listed as 2N344 (circa 1964).

2N240 semiconductor manufactured by Allied Electronics, listed as 2N240 (circa 1964).

2N232 semiconductor manufactured by Allied Electronics, listed as 2N232 (circa 1964).

2N2479 semiconductor manufactured by Allied Electronics, listed as 2N2479 (circa 1964).

2N2478 semiconductor manufactured by Allied Electronics, listed as 2N2478 (circa 1964).

2N2380A semiconductor manufactured by Allied Electronics, listed as 2N2380A (circa 1964).

2N2380 semiconductor manufactured by Allied Electronics, listed as 2N2380 (circa 1964).

2N2087 semiconductor manufactured by Allied Electronics, listed as 2N2087 (circa 1964).

2N2086 semiconductor manufactured by Allied Electronics, listed as 2N2086 (circa 1964).

2N228I semiconductor manufactured by Allied Electronics, listed as 2N228I (circa 1964).

2N2280 semiconductor manufactured by Allied Electronics, listed as 2N2280 (circa 1964).

2N2278 semiconductor manufactured by Allied Electronics, listed as 2N2278 (circa 1964).

2N2279 semiconductor manufactured by Allied Electronics, listed as 2N2279 (circa 1964).

2N2277 semiconductor manufactured by Allied Electronics, listed as 2N2277 (circa 1964).