Lumen Search in Google is a search tools chrome extension. it's a free extension , it has 18 active users since released its first version, it earns an average rating of 4.50 from 2 rated user, last update is 2522 days ago.
A small shortcut in Google Search to open Lumen Database
You could download the latest version crx file or older version files and install it.
Deutsch.
100% user give 4-star rating. Read reviews of lumen search in google
You could find more help information from lumen search in google support page.
You could send emails to publisher, or check publisher's website.
You could click to report abuse of lumen search in google.
I installed it today and found no effect, did not see the button