Patent Awarded: US Patent 1,325,905
1920
Alice H. Parker's patent, US Patent 1,325,905, was awarded for her heating furnace that utilized natural gas. Her design was groundbreaking, as it envisioned a system with multiple burners individually controlled to heat different areas of a building. Though never implemented exactly as she designed it, her concept of zone heating predates modern central heating systems and laid a groundwork for future improvements in climate control.