Thanks for the great infoNice art deco soda! Here is some imformation from 1921 about the company I found researching on google.
WELL KNOWN MANUFACTURER DIES
Marshall Elias Gray 67 of the firm of Gray & Light Inc of Bridgeport Conn one of the best known manufacturers of soda waters and dealers in mineral waters in the state died of heart disease last month at his home in that city With his brother James Gray he entered the soda water business at New Canaan Ct 40 years ago In 1887 he moved to Bridgeport and engaged in the same business at 259 Black Rock avenue One year later his brother in law Owen Light joined him in the manufacture of soft drinks under the firm name of Gray & Light.
Apparently there is also a hutch from this company which is Rare according to Hutchbook.com!
Hopefully this was helpfull.