calculating machine
Patents for Early Office Supplies
Our patent prosecution attorneys have updated the “Historic Patents” section of our website to include some interesting U.S. patents for early office supplies. Imagine the chaos within your office without the humble push pin! This early Push Pin patent issued in 1914 direct to an angled push pin. Our patent lawyers have also added this patent from 1932 simply titled “Calculating Machine;” as well as a Pencil and Eraser patent from 1858!