Original text - Engels - 2)Nothing hereinabove contained shall deprive...

2)Nothing hereinabove contained shall deprive recipient of the right to use or disclose any information:
a) which has, at the time of disclosure, been generally known to the public or which correspondended to the general state of technology, or
b) which becomes at a later date, generally known to the trade or the public through no fault of one of the parties, or