Inventions Celebrated in May

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Across
  1. 5. Vehicle whose 19th‑century patent anniversary rolls around each May
  2. 7. Product born of a May patent that reshaped workwear
  3. 8. Propulsion breakthrough patented in May by a future aviation pioneer
  4. 11. Implantable device marking a key medical anniversary each May
  5. 12. Device whose early demonstrations helped cement an inventor’s May milestones
Down
  1. 1. Invention linked to several May rulings and demonstrations in its early years
  2. 2. Phenomenon experimentally confirmed by a physicist celebrated in May
  3. 3. Technology behind a supermarket first achieved in May 1974
  4. 4. Breakthrough in coherent light first achieved in early May 1960
  5. 6. Fastener refined by a Swedish‑American inventor honored in May
  6. 9. Innovation that carried a famous four‑word message sent in late May
  7. 10. Instrument whose early compound form is tied to May commemorations