Crespin

BOPI info pertinent to 1893

French patent agent Crespin was recorded as being at address rue Cambon, 19, Paris.

Patents for which Crespin was the patent agent

• Patent FR-1893-232001 (Inventors: Duchâteau, English title: System facilitating the recognition, in the context of thick sea fog, the direction from which perceived sounds come)

Sources

• BOPI (1893, tome 13)