No just intrigued at the number of this style by under-documented French businesses. I wonder if some including these were simply factored by a French company and made in Bohemian region.
Going back to 1892 I found L de Beaune & Hugrel who were also doing laboratory glass and had a depot address in rue de Verrerie, Paris. Their manufactory being in dept 76 Seine-Inferieure (Seine Maritime since 1955). Their were about a dozen candidate glassworks in Seine-Inferieure, with a G Denolly, Verreries de Grande-Vallee, offering exactly the same specialities and wording as SPV. SPV perhaps started up between 1892 and 1895. Was the Paris operation a factory or not though. It would appear that they were essential bottle and lab glass makers and obviously machinery for optical glass... but no trace anywhere of them dabbling in decorative glass other than the glass itself.
Steven, were their also pieces of this style of glass attributed to a Delahaye? It seems to ring a bell but maybe a wrong one.