This notebook is undated but was probably used sometime during the 1880s. It is the second of two books containing notes about arc and incandescent lighting patents issued to various inventors between 1879 and 1881. The entries consist of copies of the claims for those patents previously recorded in Notebook N-81-09-13.1. The book contains 192 numbered pages.
Blank pages: 170-192. Courtesy of Thomas Edison National Historical Park.