Circa 1939 - inventor lee de forest works in his los angeles laboratory, followed by aerial views of the city.

Name: Circa 1939 Inventor Lee De Forest
Uploaded: 2023-07-25T00:00:00.000Z
Duration: 47 s
Channel: Rick Ray
Description: Circa 1939 - inventor lee de forest works in his los angeles laboratory, followed by aerial views of the city. Stock Footage Video (100% Royalty-free) 1106618465 | Shutterstock