1940s - A 1940s film about the importance of electronic tubes in our lives and in the World War Two efforts.

Name: 1940s 1940s Film About Importance Electronic
Uploaded: 2013-10-08T00:00:00.000Z
Duration: 3 min 5 s
Channel: Rick Ray
Description: 1940s - A 1940s film about the importance of electronic tubes in our lives and in the World War Two efforts. Stock Footage Video (100% Royalty-free) 4829654 | Shutterstock