Burroughs were one of the original manufacturers of Nixie tubes. In fact ‘Nixie’ is a trademark of Burroughs Corp. They bought the company that actually started manufacture of Nixie tubes – Baydu Brothers. Though there are earlier mass-produced cold-cathode numeric display devices made by National Union.

122P224 <p>The 122P224 Nixie tube (or B5092A) was made by Burroughs of the United States, so this is a genuine branded Nixie tube. This tube is special because it has Krypton 85 added, which is a radioactive isotope of Krypton that emits alpha particles. These keep the Neon ionized and so help reduce the time it takes the tube to 'ignite', especially in dark conditions.</p>
B6091 <p>The B6091 is a medium-sized Nixie tube made by Burroughs</p>
B54370A <p>The B54370A seems to be a variation of the B5441A - it has a comma in place of one of the decimal points, probably for use in displaying thousands.</p>
HB-106 <p>The HB-106 was the first ever branded Nixie tube, made at the Haydu Brothers factory, which was owned by Burroughs.</p>