That dating information is not correct.
The company was first registered as "Sorrento" in 1911 but changed name to "Uncas Manufacturing Co" in the early 1920s. They celebrated their 100th anniversary in June 2011 and they're still in business today as "Uncas International":
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Discover the unmatched quality and style of UNCAS International, a leader in jewelry and accessory solutions. From innovative product development to global distribution, we transform retail experiences with our luxurious, trend-forward designs and comprehensive services tailored for your business.
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Their use of the 'Kiddiegem' trademark within the Uncas business dates from 1935-1996 as I said, but they didn't bother with a third renewal and the trademark then lapsed.