1. Rufus Stokes invented an air-purification device Patricia Bath invented a device that removes cataract lenses John Lee Love invented the portable pencil sharpener that many artists use today Cordell Reed developed improvements to the methods of producing nuclear electric power The first video home security system was invented by Marie Brown Frederick Jones invented an automatic refrigeration system for long-haul trucks
2. Rufus Stokes invented an air-purification device Patricia Bath invented a device that removes cataract lenses John Lee Love invented the portable pencil sharpener that many artists use today Cordell Reed developed improvements to the methods of producing nuclear electric power The first video home security system was invented by Marie Brown Frederick Jones invented an automatic refrigeration system for long-haul trucks
3. Rufus Stokes invented an air-purification device Patricia Bath invented a device that removes cataract lenses John Lee Love invented the portable pencil sharpener that many artists use today Cordell Reed developed improvements to the methods of producing nuclear electric power The first video home security system was invented by Marie Brown Frederick Jones invented an automatic refrigeration system for long-haul trucks
4. Rufus Stokes invented an air-purification device Patricia Bath invented a device that removes cataract lenses John Lee Love invented the portable pencil sharpener that many artists use today Cordell Reed developed improvements to the methods of producing nuclear electric power The first video home security system was invented by Marie Brown Frederick Jones invented an automatic refrigeration system for long-haul trucks
5. Rufus Stokes invented an air-purification device Patricia Bath invented a device that removes cataract lenses John Lee Love invented the portable pencil sharpener that many artists use today Cordell Reed developed improvements to the methods of producing nuclear electric power The first video home security system was invented by Marie Brown Frederick Jones invented an automatic refrigeration system for long-haul trucks
6. Rufus Stokes invented an air-purification device Patricia Bath invented a device that removes cataract lenses John Lee Love invented the portable pencil sharpener that many artists use today Cordell Reed developed improvements to the methods of producing nuclear electric power The first video home security system was invented by Marie Brown Frederick Jones invented an automatic refrigeration system for long-haul trucks

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