Burroughs BD400 beam switching tube
The device carries the markings DD9, 6515 and 2399. It also carries a Sperry number #334601A.
Information is being assembled about this device - check back later!
This file was last modified
15:55:24, Tuesday September 02, 2014
FOR SALE: Note that any valve which is not CV marked is now for sale. Contact me via email - see the home page.