No longer in business
Essex Arms
No.
No
Been out of business for 75+ years
No. Winchester is still in business.
I know of no public database for Essex firearms. Sorry.
FIE was an importer. They went out of business in the 90s.
They are moving to Florida.
Made by Crescent firearms.
Nope. They were an importer, not a manufacturer, and went out of business in 1996.
According to a contribution on a firearms research forum this company went out of businees during the Depression of the 1930s.