CrosswordMint
Obscure Patents of Pioneering Innovators
Challenging puzzle for experienced crossword solvers
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Across
  • 1. Early motion viewer, predating cinematic frames and reels
  • 2. Rotor design once promising vertical flight, lost in aeronautic lore
  • 4. Ancient device emitting light, yet overshadowed by Edison’s fame
  • 5. Conductor interface once integral to arc devices, now common yet overlooked
  • 7. Obsolete acoustic transmission system, ancestor of modern speakers
  • 9. Graphing instrument for motion, precursor to modern oscilloscopes
  • 10. Airborne broadcast method patent, unheard beneath satellite dominance
  • 13. Early fire suppression invention, smothered in patent history
  • 17. Mechanical gap concept in early engines, crucial yet unnoticed
Down
  • 3. Innovative balancing apparatus, precursor to modern gymnastic aids
  • 6. Precursor to remote control, a marvel before radio signals reigned
  • 8. Light-sensitive matrix for imaging, forgotten in pixelated epochs
  • 11. Device harnessing air currents, a patent eclipsed by the airplane
  • 12. Instrument combining radio and optics, a patent lost in static
  • 14. Glass-like insulating material patented for electrical devices, eclipsed by ceramics
  • 15. Inventor’s subaqueous dive apparatus, forgotten under Archimedes’ shadow
  • 16. Early patent for microwave generation, before radar’s rise to fame
  • 18. Patented equilibrium principle in mechanics, foundational yet unsung

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