Menlo Park: The World's First R&D Lab

Thomas Edison's Menlo Park
Bettmann / Corbis

Workbench
During his years at Menlo Park, Edison radically improved the generator while developing numerous other devices to measure and improve the production and distribution of electricity, like sockets, switches and insulating tape. At around the same time, he also invented the kind of gummed tape commonly used to secure packages.

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