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Patent X-8737: 1835-04-03, Screw press

X Number Date Inventor City Title Status
X-8737 1835-04-03 Thomas Gilpin Wilmington, DE Screw press Recovered


Most of the patents prior to 1836 were lost in the Dec. 1836 fire. Only about 2,000 of the almost 10,000 documents were recovered. Little is known about this patent. Only the patent drawing is available. This patent is in the database for reference only.

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x-patents/x-8737.txt · Last modified: 2019/05/25 21:49 (external edit)