I was able to find one stumbling around google, if anyone else is interested. Lenovo X1 G3 from Sporton[1]. And a less comprehensive report from Intek, for 2016 random brand convertible [2].

[1]: https://fccid.io/2AJN7-TP00089ASI

[2]: https://fccid.io/2AAWC-ELL1102