Today back in 1887, patent #371,496 issued for the “comptometer,” the first adding machine “absolutely accurate at all times.” It was invented by Dorr Eugene Felt of Chicago; a model was constructed in 1884.

From MAA – On This Day in Math

From Michael White’s blog – http://patentlibrarian.blogspot.ca/2013/08/uspto-adopts-pdf-for-patent-documents.html

The USPTO has adopted PDF as the default format for displaying patent documents from its databases, making it one of the last (if not last) of the major patent offices to switch to the world’s most popular document image format. Since 1998, viewing US patent documents obtained from the USPTO website required the use of a TIFF plugin such as alternaTIFF or interneTIFF.

The Library has upgraded its Scifinder Scholar subscription to the Academic Unlimited Access Program. This means that you have 24/7 access to Scifinder regardless of the number of users. Regards Kevin Lindstrom Science & Engineering Reference Librarian

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