Question: What widely used on aircraft in the 1930s through 1950s was the result of the development of the M-25?
Sentence (from "Shvetsov ASh-82"): The Shvetsov ASh-82 (M-82) is a Soviet 14-cylinder, two-row, air-cooled radial aircraft engine developed from the Shvetsov M-62.
Relevant evidence: Yes