When did Gordon Armstrong invente incubator?

Gordon Armstrong did not invent the incubator; rather, he is known for his work in the field of neonatal care. The modern incubator was developed in the early 20th century, with significant contributions from various inventors, including Dr. Martin Couney, who showcased incubators at fairs in the 1900s. The design and technology of incubators have evolved over the years, but Armstrong is not credited with their invention.