Created the flip-open communicator and the medical tricorder for Star Trek (1966)

Although never got any screen credit for his work on the show, he created a lot of props and designs in the first season of "Star Trek" (1966). These include the puppet of Balok for "The Corbomite Maneuver", the Romulan starship for "Balance of Terror" and the Gorn's full body make-up for "Arena".

Designed the titular time travel device used in The Time Machine (1960).