| Isengart Brewing Co. | ||
| Troy, NY (1865 - 1915) | ||
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Isengart's Best Beer Pre-pro |
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| Legal Name | Location | Dates |
| Christian Isengart | Troy, NY | 1865 - 1870 |
| Isengart & Voigt | Troy, NY | 1870 - 1887 |
| Donohue, Tierney & Gross | Troy, NY | 1887 - 1888 |
| Donohue-Tierne-Isengart Brewing Co. | Troy, NY | 1888 - 1901 |
| Isengart Brewing Co. | Troy, NY | 1901 - 1915 |