From Parallel Mafia Guide
- Blank Blueprint Item
- Blank Blueprints also drop from Enemies at a fairly common rate
- Blank Blueprints can be taken to a Construction Site to "Create Blueprints"
- Costs: 1 Blank Blueprint and 5 Credits
- Creates 1 Random Blueprint with Random Bonuses
- Blank Blueprints can be Traded and do stack in your Inventory