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Patents All pages (6432 articles and redirects)
| ABA | to | Addiator Perplex |
| Addiator Piccolo | to | Addo-X 7341-60 |
| Addo-X 80 E | to | American Digest 1924 |
| American Machinist | to | Aristo Streckenzugtafel 1780 |
| ArithMachine Material | to | A Brief Introduction of Chinese Mechanical Calculator |
| Babbage, Charles | to | Baum Additionsmaschine |
| Baum Anleitung | to | Blater 1887 |
| Blater 1888 | to | Briggs 1631b |
| Briggs 1760 | to | Brunsviga MJ, MJI |
| Brunsviga MJR | to | Caillet 1858 |
| Cajori 1909 | to | Ciermans |
| Cieslik 1981 | to | Contorapid |
| Conto A | to | DE742692 |
| Debenham, Ernest Ridley | to | Differenzenmaschine für Anfänger |
| Differenzenmaschine Hamann | to | Dupuis 1864 |
| Dupuis 1865 | to | EOS |
| EOS Material | to | Facit Material |
| Facit MX 11 C-9 | to | Fingertip |
| Finnland | to | Gardiner 1796 |
| Gardiner 1810 | to | Getriebe |
| Geuss 1784 | to | Greve, John E. |
| Greve 1897 | to | Hahn, Philipp Matthäus |
| Hahn 1823 | to | Hedrick 1920 |
| Heger 1913a | to | Hoüel 1942 |
| Hounsfield Planimeter | to | Istituto Idrografico 1916b |
| Istituto Idrografico 1938 | to | Kerigan 1821 |
| KES-ADD | to | Kononenko 1953 |
| Kononenko 1955 | to | Lagomarsino Material |
| Lagrous Material | to | La Popolare |
| La Populare | to | Lobatto 1833 |
| Löbel/Müller/Schmidt 1982 | to | Madas (Maschine) |
| Madas 1 | to | Matzek 1861 |
| Maul 1966 | to | Mercedes Euklid Mod. 21 |
| Mercedes Euklid Mod. 21 S (23 EP) | to | Monroe |
| Monroe, Jay R. | to | Multi-Divi AB |
| Multical | to | Netto-Planimeter |
| Netzplanimeter | to | Odhner - Hill Arithmometer |
| Odhner 10 | to | OF |
| Office | to | Ostfriesen Rechner |
| Otis King Calculator | to | Patente aus den USA 1889 |
| Patente aus den USA 1890 | to | Patente aus den USA 1989 |
| Patente aus den USA 1990 | to | Pensa WK-1 |
| Perag | to | Pocket Adding Machine PAM |
| Pocket Calculator | to | Productor |
| Produktentafeln | to | Ray Subtracto Adder |
| RC Allen | to | Reese/Schneemann 2011 |
| Reese/Vande Velde/Guerin | to | Remington Printing Calculator |
| Remington Rand | to | Roegel 2010 |
| Roe 1633 | to | Saldorita Material |
| Salmoiraghi 1901 | to | Schleifkontakt |
| Schlenker 1927 | to | Schuelke 1951 |
| Schuelke 1954 | to | Shanghai Calculator JSY-20 |
| Sharp | to | Spaßrechner |
| Spaß mit Rechnern | to | Steuertrommel |
| Steward Material | to | Tasma |
| Tasma A | to | Tom Thumb Adding Machine |
| Tom Thumb Products | to | Tröger (Rechenscheibe) |
| Troitzsch/Weber 1982 | to | Unterberger 1777 |
| Untersetzungsgetriebe | to | Victor 17-85-54 |
| Victor 2 | to | Vlack 1742 |
| Vlack 1748 | to | Washington-Betonrechner(Serie G) |
| Washington-Betonrechner (Serie E) | to | Wentworth/Smith 1914 |
| Wentworth/Smith 1943 | to | Wolff 1728 |
| Wolff 1742 | to | Zerfowski 1999 |
| Zerfowski 2004 | to | Zylinderstift |