Humanities › History & Culture Before You Start an Inventors Log Book Share Flipboard Email Print Ben Hupfer/Corbis/VCG/Getty Images History & Culture Inventions Famous Inventions Famous Inventors Patents & Trademarks Invention Timelines Computers & The Internet American History African American History African History Ancient History and Culture Asian History European History Genealogy Latin American History Medieval & Renaissance History Military History The 20th Century Women's History View More By Mary Bellis Mary Bellis Inventions Expert Mary Bellis covered inventions and inventors for ThoughtCo for 18 years. She is known for her independent films and documentaries, including one about Alexander Graham Bell. Learn about our Editorial Process Updated on May 24, 2019 An inventor's log book is used to record the progress of your inventing. You should start using one the moment you think of an idea for an invention. However, your log book must be of a certain type. You can buy a specially printed inventor's log book. You can also buy a generic bound notebook. The most important thing is that the pages of the notebook cannot be added or subtracted without that being evident. Before Buying Specially Printed Log Books Look for sequentially pre-printed numbered pages, fade-away backgrounds, spaces for you and a witness to sign & date, and instructions on how to use the journal. Look for pages with blue-lined grids for easy drawing. Some log books have special copy features; copy drawings on a light copier setting and the grid pattern fades away for preparing patent application drawings, or copy the drawings on a dark setting and the words, "Do Not Reproduce" appears for confidence usage. Inventor's Notebooks Scientific Journal Generic Bound Notebooks Never buy a loose leaf notebook. Never buy 3-ring binders to use as a log book. Never buy a legal pad or any glued together notebook. Buy a notebook with pages as secure as possible - a bound or sewn notebook. Mead brand composition books are perfect. Buy only notebooks with white pages - the lines can be colored blue or black. Mead Composition Notebooks Generic Ledger Books These common and inexpensive ledger books can also be used as a log book. The same considerations given to bound notebooks will apply - bound books only. Remember you have to buy a separate log book for each different idea, so inexpensive is sometimes the way to go. Staples Office Supplies ledger book Cite this Article Format mla apa chicago Your Citation Bellis, Mary. "Before You Start an Inventors Log Book." ThoughtCo, Aug. 27, 2020, thoughtco.com/before-you-start-an-inventors-log-book-1991992. Bellis, Mary. (2020, August 27). Before You Start an Inventors Log Book. Retrieved from https://www.thoughtco.com/before-you-start-an-inventors-log-book-1991992 Bellis, Mary. "Before You Start an Inventors Log Book." ThoughtCo. https://www.thoughtco.com/before-you-start-an-inventors-log-book-1991992 (accessed March 24, 2023). copy citation