What year was the J Stevens Arms Co. Springfield Model 15 with patent numbers 2173676 2223092 2230372 manufactured?

The J Stevens Arms Co. Springfield Model 15 was manufactured in the early to mid-20th century, with patent numbers 2173676, 2223092, and 2230372 indicating a production timeframe around the late 1930s to early 1940s. Specifically, these patents were granted between 1939 and 1941, suggesting that the model was likely produced shortly thereafter.