Specifications of inventions...

Description based on: 1848.Includes Specifications of inventions. Delayed and amended, 1903-1942.Text and plates issued in separate volumes, <1848>-1927/28.Text and plates.For the years <1848-1901> patent numbering begins with no. 1 each year; vols. published after 1915, called New series, patent no. 100000- 1605200; [ser. 3] called new series v.1:2000001A- . The designation A is dropped with v. 363.Mode of access: Internet.Subject index: Class 36-70 (1861-1910).-- Class 71-97 (1861-1910).-- Class 98-120 (1861-1910).-- Class 121-146 (1861-1910).Beginning 1853- , plates and text bound separately