| Patents for Robert Graves |
Patents 1 -
6
of 6
      |
| Number | Date | Patentee | Title | Type |
| 3,159X | Dec. 31, 1819 | R. Graves | Gauge plate for making readies for cordage and ropes | rope maker |
| 3,256X | Nov. 22, 1820 | R. Graves | Improved mode of drawing yarns and forming them into readies | |
| 3,257X | Nov. 22, 1820 | R. Graves | Machine for equalizing the strain on yarns | spinner |
| 3,258X | Nov. 22, 1820 | R. Graves | Machine for making and laying ropes | rope maker |
| 4,828X | Jul. 25, 1827 | R. Graves | Mode of making cordage by machinery | rope maker |
| 4,829X | Jul. 26, 1827 | R. Graves | Mode of passing boats up and down elevators in canals | boat raising machines |
