Across
- 2. made the laserphaco probe to remove cataracts
- 5. created the first folding chair
- 7. invented a wringing mop
- 9. patented the first ice cream scoop
- 13. created the first wooden clock
- 15. created refrigerated trucks
- 16. did research that led to fiber optics
- 18. patented the illusion transmitter used at NASA
- 19. holds 3 of IBM's PC patents
- 20. patented the lock
Down
- 1. developed 300 uses for peanuts
- 3. invented modern toilet
- 4. had the first mobile blood collecting unit
- 5. his first far ultraviolet camera is on the moon
- 6. created the first potato chip
- 8. patented the dry-scouring process
- 10. made a gas mask
- 11. made automatic closing elevator doors
- 12. invented a safer mailbox
- 14. invented the carbon filament for light bulbs
- 17. made wire precision resistors