David Pressman Books

Nolo s patents for beginners

By David Pressman

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Patent it yourself

By David Pressman

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For over 30 years, Patent It Yourself has guided hundreds of thousands of inventors through the process of getting a patent, from start to finish. Patent attorneys David Pressman and David E. Blau...

Patent It Yourself

By David Pressman

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Nolo's Patents for Beginners

By David Pressman, Richard Stim

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Patent Pending in 24 Hours

By David Pressman, Richard Stim

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Patent It Yourself 11th Edition

By David Pressman

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How To Make Patent Drawings

By David Pressman, Jack Lo

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The Inventor's Notebook: A Patent It Yourself Companion 4th Edition

By David Pressman, Fred E. Grissom

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Ion Channels in Health and Disease

By Geoffrey S. Pitt

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Patent It Yourself

By David Pressman

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How to Convert ISBN-10 to ISBN-13 (and Vice Versa): A Complete Guide

If you’re in the world of books—whether as a publisher, librarian, bookseller, or avid collector—you’ve likely come across the terms ISBN-10 and ISBN-13. Understanding these formats and knowing how to convert between them is essential for maintaining consistency and compatibility in book records. In this post, we’ll cover everything you need to know about ISBN conversions, step by step.

What is an EAN and How Does it Relate to an ISBN?

If you’ve ever purchased a product online or in a store, you’ve likely come across a barcode. Behind these barcodes lies a standardized system that makes modern commerce possible. Two key codes often encountered are the EAN (European Article Number) and ISBN (International Standard Book Number). But what are they, how are they connected, and why are they so crucial? Let’s explore.