I searched the FCC databases to check WigWag's filings.
The Filament bulb was approved on 16 Oct 2014, and the 6LowPAN radio was approved on 10 Feb 2015.
I found no other approved or pending applications, which either means:
a) WigWag is using existing radios for everything else and no further approvals are required (very good), or,
b) WigWag hasn't started the approval process for other products needing it (very bad).