Who was granted the first patent for a device specifically labeled an "air purifier" in 1835?

Answer

William Henry

The transition toward actively engineered solutions for air cleaning began in the 19th century with formal patents being issued. William Henry secured a significant early patent in 1835. His device was explicitly designated as an "air purifier." This invention was developed in response to the pollution challenges common in domestic environments of that era, particularly addressing the smoke generated by combustion sources used for heating and cooking within homes. While subsequent inventions became more complex, Henry's patent marks an important conceptual step where the deliberate design of a machine solely for air cleaning was recognized and protected legally, even if the technology was relatively basic compared to later standards.

Who was granted the first patent for a device specifically labeled an "air purifier" in 1835?

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