It's more like a registered trademark. From the top lever, the gun looks to be one based on the Helice action, which was invented by Verney-Carron. Once the patent expired, other makers copied the action. Verney-Carron registered several names, and 2 or 3 of them included the word "Helice". But other makers also used some form of the name Helice on their guns. This looks to be one that copied the action but didn't use the name. Looks like this one may have based the name they use on the French word "solide". Same as in English. And the Helice action was indeed solid.
