"Inventions." . . "Inventors." . . . . . . . . . . . . "Looks at known and unknown American inventors, noting the success and failure of their ideas. Points out that American inventors have made significant contributions, which have shaped the industrial world and have provided the common man with innumerable conveniences and luxuries."@en . "Our inventive heritage" . . . "Our inventive heritage"@en . . . . "History of American inventors" . . "History of American inventors"@en . . . . . "Looks at known and unknown American inventors, noting the success and failure of their ideas. Points out that American inventors have made significant contributions, which have shaped the industrial world and have provided the common man with innumberable conveniences and luxuries." .