That would be Thomas Pohle.

After much thought I would say hands down UF Grant as far as sheer volume of magic invented and effective yet simple workings. The man was a magic machine, you may not know it but Grant came up with so many effects that major magic companies such as Abbott's had to market them under a different name...'Zella'...because no one would believe one man could invent so much magic! As far as creativity and being ahead of his time I would say my man Anverdi. Just about everything he made was well thought out and very creative and blew audiences away, whether electronic or his trays and bottles.