They were well known for their design but there was no commercial success. In 1926 the Englishman Murray Harris entered the company and then called Harris Leon Laisne.

Leon Laisne emblem. (source: Radiator Emblem Collection)
Leon Laisne emblem. (source: Radiator Emblem Collection)
Leon Laisne ad. (source: Radiator Emblem Collection)
Leon Laisne ad. (source: Radiator Emblem Collection)
1924 Leon Laisne ad. (source: Radiator Emblem Collection)
1924 Leon Laisne ad. (source: Radiator Emblem Collection)