Patents for William H. Folger |
Patents 1 -
3
of 3
|
Number | Date | Patentee | Title | Type |
5,000X | Feb. 13, 1828 | W.H. Folger | Machine for separating and collecting gold | ore processing apparatus |
5,634X | Sep. 10, 1829 | W.H. Folger | Machine for Washing Alluvial Earth, Clay, and Soft Ores, and Separating and Saving the Gold From the Same | ore processing apparatus |
5,715X | Nov. 18, 1829 | W.H. Folger | Mills for grinding, washing, and separating gold and silver from ores, earth, or in whatever state these metals may be found... | ore processing apparatus |