http://book.klll.cc/ebooks/subject/36078.opds 2025-08-15T16:40:25Z Books about Patent practice -- United States -- Popular works (sorted by popularity) Free eBooks since 1971. Project Gutenberg https://book.klll.cc webmaster@gutenberg.org https://book.klll.cc/gutenberg/favicon.ico 25 1 2025-08-15T16:40:25Z https://book.klll.cc/ebooks/64666.opds Patents and How to Get One: A Practical Handbook United States. Department of Commerce