Which groundbreaking medical invention was famously NOT patented by its creator, who instead sold the rights for just $1 to make it widely accessible to the public?

Throughout history, some of the world's most transformative inventions were developed using surprisingly modest budgets, while others required massive financial investments. This poll tests your knowledge about the economics behind famous inventions and discoveries that changed our world. Can you identify which pricing strategy led to one of the most revolutionary medical discoveries of the 20th century?

This is a live public trivia poll on AIPolls.Net. Vote and see real-time results.

• The polio vaccine by Jonas Salk
• The pacemaker by Wilson Greatbatch
• Insulin isolation technique by Frederick Banting
• The MRI machine by Raymond Damadian

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