The double propeller patent filed by Adolf Froelich in 1933 represents a specific technical contribution to aviation engineering that emerged alongside his career in dentistry. Born in Łaziska, Poland, in 1887, his life spanned decades of regional conflict and professional transition, reflecting the shifting technical and medical landscapes of the early twentieth century within the Second Polish Republic.
Early Education and Career
Before establishing himself as a medical practitioner, Froelich pursued studies in brewing technology at the scientific department Weihenstephan of the Technical University of Munich in Freising. He subsequently shifted his focus toward dentistry, earning his professional approbation in 1918. During his active years in the field, he maintained a clinical practice in locations such as Jędrzejów.
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Froelich served as a lieutenant within the Polish Armed Forces. His military tenure included participation in the Polish-Soviet War, during which he served as a member of the 9th Infantry Division. His service records identify him as both an officer and a dentist, highlighting a career that balanced clinical duties with military obligations during a period of national instability.
Patent and Personal History
His technical output is evidenced by the Polish patent documentation for his double propeller invention, registered on 21 August 1933. Born to Reinhold Froelich and Antonina Wilhelmina Józefina Froelich, née Majewska, in Opole Lubelskie County, he remained a citizen of the Second Polish Republic throughout his life. He died in Warsaw in 1943 at the age of 56.
Fast facts
- Born: 24 December 1887
- Died: November 1943
- Birthplace: Łaziska, Poland
- Deathplace: Warsaw, Poland
- Occupation: Dentist, Inventor
- Military Rank: Lieutenant
- Patent: Double propeller (1933)
Questions readers ask
What was Adolf Froelich's primary occupation?
He was a trained dentist who received his professional approbation in 1918 and practiced in areas including Jędrzejów.
Did he participate in any military conflicts?
Yes, he served as a lieutenant in the 9th Infantry Division of the Polish Armed Forces during the Polish-Soviet War.
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