Table of contents
March 29, 1879, Volume 40 No 13 pp191-204
About the coverBusiness and Personal
Notes and Queries
Index
Patent Notes
Top of page
Top of pageArticles
How Our Patent Laws Promote and Improve American Industries - p192
doi:10.1038/scientificamerican03291879-192
Spain a Field for Machinery and Patents - p193
doi:10.1038/scientificamerican03291879-193