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The company fate is substantially related to that of the founder family, ''Paul E. Wirt''. His son, who was taking over from his father in running the business, died in 1921, and only after four years ''Paul E. Wirt'' went out of business by selling the company. The company remained active for a short time in the production of plastics, but the great depression of 1929 led it to a premature end.

The company fate is substantially related to that of the founder family, ''Paul E. Wirt''. His son, who was taking over from his father in running the business, died in 1921, and only after four years ''Paul E. Wirt'' went out of business by selling the company. The company remained active for a short time in the production of plastics, but the great depression of 1929 led it to a premature end.{{Infobox_Brand|Wirt}}