Back in 1981 inventor Stan Mason was an INC. cover subject featured in a story about innovators. His 18-year-old R&D firm, Simco, continues to help Fortune 500 companies develop products, but it also spawns ideas that Mason pursues on his own. His latest: dry-ink fingerprinting kits he says are cleaner and clearer. The kits are made by Family Security Systems, in Weston, Conn.

-- Leslie Brokaw

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