This House of manufacture of soldering was creates 7 passage Raven in PARIS by Mr LEANDRE BERTRAND (L Taw), probably to the 1890s. No wonder to find marked lamps L.B resembling ML to be mistaken.

In 1911 the company L.BERTRAND, established the Moulin Joly Street is transferred then dissolved the 70 street of Angoulême in PARIS, or this case resumed by MARCEL LEJEUNE.

Eventually the company will be transferred at 98 rue of Angoulême in PARIS.

March 16, 1925 Marcel LEJEUNE, industrial in NEUILLY, formed with his son Francis Jean Louis LEJEUNE, a partnership for a period of 9 years and 8 months of March 1, 1925: LEJEUNE father and son. The company has been extended for a further period of twenty years from November 1, 1935.

October 5, 1936, Mr Marcel LEJEUNE died, his widow joined the company, it is the LEJEUNE son ET CIE (celle - ci continues between Francis LEJEUNE, Madam JEJEUNE and Melle LEJEUNE).

Mr Bernard LEJEUNE tells us more about this company.

Mr Marcel LEJEUNE was born 1864, died in 1936 in CHAILLY EN BRIE at the age of 72. He has 2 boys and 2 girls. It is a "Cabinet ice". He is big, strong and has good appetite.

His first job is to sell machines - tools and gear cutting. It manufactures drills. In 1925, he created the acronym "CANON 75", according to a formidable weapon of the great war. He invented the air in other tube valves. It was a male worker, opportunistic, with qualities of great heart. His son Francis LEJEUNE, who succeeded him, was born in 1894 and died in 1966. Meanwhile, he became father of 5 children including the elder Michel, the technician (1923-1954), and Jacques (ESSEC school).

Bernard LEJEUNE joined the company in July 1954, at 98 rue J.P. TIMBAUD in a LEJEUNE company with about 10 people to replace Michel, then died.

It is an artisanal company. He explains that almost all manufacturing tanks ML was conducted from a mechanical press 100 ton NIAGARA purchased second-hand by his grand - father in montreuil and having the dimensions 2 meters in height to 0.6 meter wide.

The rest of the parts, spouts, handles and plugs were crafted in the same workshop with Tower turret with 6 tools.

Some vats of lamps were in 2 or 3 parts, these parts were assembled by brazing gas more air to the Roman called weld (TRATEX), and later the argent(40%) welding.

It is Michel who, working with his father Francis, is developing the manufacture of flat lamps KP - MP, 4 p, and TL 130(pour le Ministère de la Télégraphie).

After the war, settlements LEJEUNE began manufacturing welding subsequently butane, propane. This production was intended for plumbers roofing etancheistes. And then, subsequently, the LEJEUNE House embarks on the tools for individuals and tinkerers.

The company operates until 1981, mainly through export, and in March 1982 closing permanently and disappearance of the company.