DEMARTEAU Gilles Joseph.

140 Rue Large Voie, Herstal (1903-1910).

Inscription with the Liege Proof House 1901/1902 later DEMARTEAU Gilles & fils in 1903 and then DEMARTEAU Gilles-Joseph & fils 1903/1922.

4 patents in Belgium (rifle, auto pistol, hunting gun).

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