What George Westinghouse invented?

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What George Westinghouse invented? Answer: Railway air brakes

Invented in 1868.

Question context

This question is part of 📚 General Knowledge within the broader 🌐 Current Affairs & GK subject and appears in the DemoPaper-Pakistan preparation collection. Reviewing the answer together with nearby questions helps reinforce the underlying concept and identify how it may appear in competitive exams.