Table of contents
March 18, 1865, Volume 12 No 12 (New Series) pp175-190
About the coverTop of page
Top of pageArticles
The Cheapest Mode of Introducing Inventions - p189
doi:10.1038/scientificamerican03181865-189
A Valuable Work for Inventors Patentees and Manufacturers - pp189 - 190
doi:10.1038/scientificamerican03181865-189a