Author : Anonim
Publisher : Unknown
Page : 412 pages
File Size : 51,5 Mb
Release : 1999
Category : Patents
ISBN : WISC:89071944979
Name and Date Patents by Anonim Pdf
Photocopy of a typescript index of early unnumbered patents. The entries in the document are arranged chronologically with the "X" patent number provided. Patents that were recovered after the Patent Office fire of 1836 are hand-recorded with class and subclass numbers in the right-hand column.