Buttered Kat

Helicopter (Old) Patent Poster (1928, E. L. Crespo)

This is a patent poster of an old helicopter, which was registered in 1928 by E. L. Crespo. We produce it using high-quality resistant materials, the poster is tear-resistant and waterproof and it comes in five different sizes.
  • Aviation
  • engineering
  • Helicopter
  • Patent
  • Patent Poster
  • Poster
  • Transportation
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