Uses set forth in § 20-20; and

Bowling establishments, funeral homes, industrial and manufacturing uses. For purposes hereof, laundries, bakeries, printing shops, dry-cleaning establishments and other businesses in which a product is manufactured shall be deemed to be industries where they employ more than 10 persons directly related to such product manufacture or use machinery of more than 10 horsepower, but it is not intended that a retail store or a service such as a department store or bank shall be limited in the number of its employees.