none they do not own
Koch's Beer is brewed by Dundee Brewing Co in Rochester, NY. Keystone is a brand of beer brewed by Coors.
There are around 1,500 American breweries, most of them small with limited distribution. Among the larger ones are Stone Brewing Co., Boston Beer Co., Sierra Nevada Brewing, Dogfish Head Craft Brewery, and Yuengling Brewing. The breweries typically associated with the U.S., Budweiser, Miller, and Coors are all owned by foreign conglomerates now.
Miller bought the Olympia Brewing Co.
Crabtree Brewing Co. was created in 2006.
Christian Moerlein Brewing Co. was created in 1853.
There are more American brewing companies than can be listed here (over 2000!), but the largest ones are: 1. Anheuser-Busch Inc. St Louis, MO 2. Miller Brewing Co Milwaukee, WI 3. Coors Brewing Co Golden, CO 4. Pabst Brewing Co Woodridge, IL 5. Boston Beer Co Boston, MA 6. D. G. Yuengling and Son Inc. Pottsville, PA 7. Sierra Nevada Brewing Co. Chico, CA 8. Gambrinus San Antonio, TX 9. New Belgium Brewing Company Inc. Fort Collins, CO 10. High Falls Brewing Co Rochester, NY
Miller LiteMiller Genuine DraftMiller 64Miller High LifeMiller High Life LightMiller ChillMiller MidnightSharp's: Miller's non-alcoholic beer.Frederick Miller Classic Chocolate LagerMickey'sOlde English 800Milwaukee's BestMilwaukee's Best LightMilwaukee's Best Ice
Alaskan brewing co.
Miller Brewing co.
Columbia Brewing Co.
You can contact Hamm's Brewing Company by phone at (800) 645-5376. You can also try contacting the Miller Brewing Company because they brew Hamm's products.