Inheritance

Grandpa was a famous inventor and a successful businessman. Towards the end of his life, he found out that the mafia was trying to get his business secrets, so he secured them in a safe in his office. He prepared clues for you on how to get to the inheritance. Unfortunately, grandpa's fears came true. The mafia took his life and is now trying to get to his safe. You only have an hour lead on them. Can you solve all the clues and secure the inheritance? Time is running out...