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| | [[Category:Inventors]] | | [[Category:Inventors]] |
| | [[Category:Engineers]] | | [[Category:Engineers]] |
| | + | |
| | + | == See Also == |
| | + | * [[Thomas Edison]] |
| | + | * [[Gallery of American Heroes]] |
| | + | * [[American Inventions]] |
| | + | * [[:Category:American Inventions]] |
| | + | * [[:Category:British Inventions]] |
| | + | |
| | + | [[Category:Inventors]] |
| | + | [[Category:American Inventors]] |
| | + | [[Category:United States History]] |
| | + | [[Category:Economic history]] |