Patent
Suchergebnisse für: Improved Willis Planimeter
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- Patent:GB189503186 20.07.1895 Willis, Edward (P) : Improvements in Planimeters, and Appliances to be employed therewith
- Patent:US1404180 17.01.1922 Willis, Edward (P) : Planimeter
- Patent:US529008 13.11.1894 Willis, Edward (P) : Planimeter
- Patent:US542511 09.07.1895 Willis, Edward (P) : Planimeter
- Patent:US672581 23.04.1901 Willis, Edward (P) : Planimeter
- Patent:USRE11568 22.09.1896 Willis, Edward (P) : Planimeter