The RCAs and Philcos mentioned were usually consoles with a rear projection screen of about 20 inches, thus their demise when direct view tubes that size became available.
EDIT - they were late 40s and were discontinued by the early 50s.
Some off brands were larger and aimed mostly at bars and clubs.
Some of the largest:
https://www.flickr.com/photos/old_tv...57633550644772