Soprogespar Societe de Promotion et de Gestion de Participations

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Paris, FR

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Information Patent Grant
Automatic telephone call generator
- Patent number 4,053,718
- Issue date Oct 11, 1977
- Soprogespar Societe de Promotion et de Gestion de Participations
- Oscar Derveaux
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

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