Biolite Inc.

Biolite Inc. located at 243 West 17th Street in New York City, N.Y. produced back lit bubbler lighted signs in the first half of the 20th century.  The interesting thing about the bubbler signs was their unique ability for the liquid in the tubes to start bubbling once the signs were heated up after being turned on for some time.   Biolite bubbler signs are highly collected today.