Aleš Lombergar

There is not much information about it:

Muller: ~

The Muller brothers worked for Galle before they established their glassworks at Luneville. Glass production was later continued at Croismare, only a short distance from Luneville. The central office remained at Luneville. Most of the glass produced at Luneville was signed “Muller Fres Luneville,” although it was sometimes signed “Muller Fr6res Luneville,” “Muller,” or “Luneville.” At Croismare, glass was signed in the following ways: “Muller Croismare”; “Muller”; “Croismare”; “Muller Croismare Nancy”; or “Croismare Nancy.” The explanation for the occasional appearance of the name “Nancy” is uncertain. At Luneville cameo glass was produced almost entirely by acid cutting. A greater variety of styles are evident in the Croismare cameo pieces with both acid and wheel cutting used. In some of the Croismare pieces wheel engraving was the major cutting technique. The exact dates of operation of the Luneville and Croismare glassworks by the Muller brothers are unknown to us, although the most active period of production has been stated to be from about 1905 to 1937.

and:

A BIT OF HISTORY : The MULLER’s family was composed of nine brothers and one sister! Native from the East of France (near Saint-Louis), six of the brothers worked as decorators and etchers in the EMILE GALLE studios at Nancy where they acquired an excellent know-how.
In 1895, they founded their own factory at LUNEVILLE. They produced many cameo and blown/pressed glasswares, among other things… The economic depression due to the fall of Wall Street forced them to close the factory in 1936.