http://book.klll.cc/ebooks/subject/11336.opds?sort_order=title 2025-08-16T23:04:29Z Books about Patents -- United States (sorted alphabetically) Free eBooks since 1971. Project Gutenberg https://book.klll.cc webmaster@gutenberg.org https://book.klll.cc/gutenberg/favicon.ico 25 1 2025-08-16T23:04:29Z https://book.klll.cc/ebooks/subject/11336.opds?sort_order=release_date Sort by Release Date 2025-08-16T23:04:29Z https://book.klll.cc/ebooks/subject/11336.opds?sort_order=downloads Sort by Popularity 2025-08-16T23:04:29Z https://book.klll.cc/ebooks/22685.opds Classification of Patents United States. Patent Office 2025-08-16T23:04:29Z https://book.klll.cc/ebooks/49532.opds Improvement in Fire-Arms and in the Apparatus Used Therewith Samuel Colt