Patent
Suchergebnisse für: Dietzgen
- Patent:US1377671 10.05.1921 C. F. Dieckmann Dietzgen (P) : Process of Fastening Non-Metallic Elements to Metal
- Patent:US1424807 08.08.1922 Carl F. Dieckmann Eugene Dietzgen (P) Co. : Magnifying runner for slide rules
- Patent:US1855523 26.04.1932 Adolph Langsner Dietzgen (P) : Slide Rule indicator
- Patent:US2369819 20.02.1945 J. E. Dietzgen Dietzgen (P) : Slide Rule
- Patent:US2543313 27.02.1951 Joseph E. Dietzgen Eugene Dietzgen (P) Co. : clip