Image: Patent Case File No. 3,237, Improvement in Sugar-Works, Inventor- Norbert Rillieux - NARA - 70663975 (page 24)
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Title: Patent Case File No. 3,237, Improvement in Sugar-Works, Inventor: Norbert Rillieux
Credit: U.S. National Archives and Records Administration
Author: Unknown authorUnknown author or not provided
Usage Terms: Public domain
License: Public domain
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