A year later in Russia, a Swede, Wilgodt Odhner, patented a machine that was almost identical to Baldwin's. Another one of those historical accidents: Odhner was working for Ludvig Nobel in St. Petersburg, and while there, with Nobel's support, began work on his calculator. His plan -- to design and manufacture an industrial calculator that would be small and simple, easy to operate, and so inexpensive that practically anyone who needed a mechanical aid would be able to acquire one.