Denmark: Inventions on Demand

When the world beats a path to his door, the run-of-the-garret inventor is apt to be about as calm as a Rube Goldberg machine going double time. Denmark's Karl Kroyer is a different sort. Last week, shortly after New York's Martin Marietta Corp. snapped up the rights to make a Kroyer-patented, skid-resistant highway surface called Syno-pal in the U.S., the Dane seemed downright bored. "To make an invention is an intoxication," said he. "But the rest —to make it work, start production and complete negotiations—is one big hangover."

Dropout or Da Vinci....

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