Cleartron Vacuum Tube Company
Cleartron Vacuum Tube Company, 28 West 44th Street, New York, New York, USA
Last seen: 14-Mar-1926
Founded by Maurice S. Haynes, Cleartron registers several trademarks in 1925, indicating they have been in business since 2-Jun-1924. Further research is planned to see if there is a relation between this Haynes and the Haynes brands of the 20's.
As a major technical aquisition, Haynes hired Capt. Samuel C. Miller as the chief engineer and researcher for Cleartron. Miller had worked for Deforest during the war, then joined RCA's research department from inception. Sam Miller brought what must have been a treasure trove of first hand experience in designing and producing tubes. Mr. Miller's obituary gives insight into his impressive accomplishments and career.
Cleartron stands out as unusual, in that they seem to never have switched to tipless tubes. This may be a clue to their production situation, as BKTT tubes are quite specific to a small window of time.
claiming use since 2-Jun-1924.
claiming use since 2-Jun-1924. 
claiming use since 13-Mar-1925. 
Cleartron tubes appear in the Nov 1927 issue of Radio Retailing, pg. 94. They did not appear in the Nov 1926 issue.
Cleartron Vacuum Tube Co. took part in the original anti-trust lawsuit against RCA. They did not receive a license in 1930.
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