en.wikipedia.org/wiki/Rogers_Vacuum_Tube_Company

Contemporary company histories do not describe a full sale of Rogers Majestic Corporation Limited to Small Electric Motors followed by Small Electric Motors renaming the company.

What the sources say instead:

• Standard Broadcasting history states that in 1941 the manufacturing assets of Rogers Majestic Corporation Limited — specifically Rogers Radio Tubes Ltd. and Rogers Batteryless Radio Co. Ltd. — were sold to Small Electric Motors Limited. It then separately says Rogers Majestic Corporation Limited changed its name to Standard Radio Limited, and retained control through Rogers Radio Broadcasting Company Limited.
• The CFRB station history is consistent with that: it lists the station's 1941 owner as Rogers Radio Ltd., not Small Electric Motors, and says Argus Corporation bought Rogers Radio Ltd. in 1946. That means the broadcasting company remained in Rogers/Standard hands after the 1941 manufacturing sale.

So the article's sentence is misleading in two ways:

1. it says "the company was sold" in 1941, when the cited histories say only the manufacturing assets were sold; and
2. it says Small Electric Motors changed the name of Rogers Majestic to Standard Radio, whereas the histories say Rogers Majestic itself became Standard Radio Ltd. while retaining the broadcasting business.

In short: 1941 was a sale of the manufacturing side, not the whole company/corporate entity behind CFRB.

The date in this sentence is off by roughly one year.

• The Smithsonian's National Museum of American History entry for the RCA/GE UX-226 says the tube was "first advertised for sale ... in September 1927."
• A detailed Philco history likewise says RCA's UX-226/UY-227 AC-tube development arrived in August 1927, after which manufacturers began introducing new AC-powered receiver models.

So while RCA was working on AC tubes earlier, the UX-226 was not marketed in September 1926. The public introduction/marketing window documented by these sources is 1927, not 1926.

The historical record describes Standard Radio Manufacturing Corporation as the company formed to manufacture receivers/radios using Rogers's AC tubes, not as a company created specifically to mass-produce the tube itself.

Supporting evidence:

• The History of Canadian Broadcasting says that after developing the new receiving tube, Ted and Elsworth Rogers started a new company "to make receivers using these tubes", financed through Standard Radio Manufacturing Corporation Limited.
• The Canadian Vintage Radio Society is even more explicit: the production receivers were manufactured by Standard Radio Manufacturing Corporation Ltd., with tube manufacture by Rogers Radio Ltd.

So the article reverses the division of labor. Standard Radio's role was the radio receiver business; the tube-manufacturing function was handled separately.