Most major companies have these sort of guidelines. When I used to work at Ericsson, there was a huge manual with all the design guidelines that specified ever

Most major companies have these sort of guidelines. When I used to work at Ericsson, there was a huge manual with all the design guidelines that specified everything from the exact shade of blue for the Ericsson logo, the font, and to how far the 'three sausages' logo should be spaced from the word 'Ericsson' (for the record, turn the 'E' horizontally and place it between the 'n' and the logo, that's the correct spacing).