Work bench accessories for hobby or craft purposes, namely, third hand tools in the nature of a third hand system of interlocking base sections and accessory elements, namely, repositionable flexible arms for holding tools and items to be worked on, repositionable inflexible arms for holding tools and items to be worked on, connectors for releasably connecting the base sections together, and connectors for releasably connecting the base sections to an underlying support surface, where the bas...

Door latch assembly systems as parts for land vehicles, namely, hydraulically-operated locks that secure debris tank doors on vacuum and hydrovac trucks, comprised of hydraulic door latches; door latch assembly system parts for land vehicles, namely, hydraulically-operated locks comprised of door sealing levers and mechanical linkages for holding the levers in a closed position; door sealing system as parts for land vehicles, comprising a debris tank in the nature of a vacuum tank being a str...