Patents for John Edwards |
Patents 1 -
6
of 6
|
Number | Date | Patentee | Title | Type |
688X | May 19, 1806 | J. Edwards | Steelyards | steel maker |
689X | May 19, 1806 | J. Edwards | Scale beams and balances | |
2,661X | Aug. 22, 1816 | J. Edwards | Imprinting and forming colored figures on hard substances | |
2,701X | Nov. 19, 1816 | J. Edwards | Improvement in the manufacture of scale beams | |
4,058X | Mar. 19, 1825 | J. Edwards | Elevator for pots, kettles and other vessels | elevators and lifts |
572,191 | Dec. 01, 1896 | R.M. Carroll | Improvements in Spanners and Wrenches | quick adjust wrenches |