Small firms targeted in patent cases
Patent holders have begun demanding licenses fees for common Internet technologies
U.S. patent office swamped by backlog
Without more funding, the wait for a patent could grow to five years
Would-be inventors lose money in scams
Many firms that promise to market new products instead take their clients' money and vanish.
Video: Whiz kids at work
Pa. high school students create a device that reads product labels for the blind
NBC on the search for the perfect tire
Two inventors say synthetics could be key to safer, wholly recyclable tires
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