How many penny stocks besides Sigma Labs have contracts and Joint Technology Development Agreements with companies and government institutions like the following?

GE Aviation: “ GE Aviation Signs Additive Manufacturing Cooperative Agreement with Sigma Labs “

Los Alamos National Laboratory:  “ Sigma Labs Receives Contract From Los Alamos National Laboratory For Advanced Manufacturing Technology “

National Institute of Standards and Technology (NIST): “ Sigma Labs Part Of Team Awarded Grant Of $5 Million For Additive Manufacturing Research “

and just this week,

Honeywell Aerospace: “ Sigma Labs Awarded Contract Extension from Honeywell Aerospace for Additive Manufacturing “

These are on top of a contract  announced in May with a Fortune 100 company for up to $ 253,000 in additional revenue.