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Curta Patents

(since April 22, 1997)

Last Update: August 26, 2021 -- THE CURTA REFERENCE


Australian patents


(thanks to Andries de Man)

Austrian patents

Curta Patent Curta Patent Curta Patent Curta Patent Curta Patent Curta Patent Curta Patent Curta Patent
(thanks to Jurgen Muller)

Belgium Patents

Curta Patent

Canadian Patents

Curta Patent Curta Patent

Swiss Patents

Curta Patent Curta Patent Curta Patent Curta Patent Curta Patent Curta Patent Curta Patent Curta Patent Curta Patent Curta Patent
(thanks Andreas Buja)

German Patents

Curta Patent Curta Patent Curta Patent Curta Patent Curta Patent Curta Patent Curta Patent Curta Patent Curta Patent

Great Britan Patents

Curta Patent Curta Patent Curta Patent

Sweedish Patents



US Patents

Curta Patent Curta Patent Curta Patent Curta Patent Curta Patent Curta Patent Curta Patent Curta Patent Curta Patent Curta Patent Curta Patent

Patents by Kurt Herzstark's principal engineer Mr. Elmar Maier

Elmar is inventor of a kind of electrically driven CURTA. Thanks to Roland Riemer - 10/17/2010

Canadian Patents

Swiss Patents

German Patents

French Patents

US Patents


The Calculator Reference by Rick Furr (rfurr@vcalc.net)
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