Jack Lo Patent Agent Books

How to Make Patent Drawings

By David Pressman, Jack Lo

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How To Make Patent Drawings: A Patent It Yourself Companion

By Jack Lo, David Pressman Attorney, Jack Lo Patent Agent, Jack Lo Patent Agent, David Pressman Attorney

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Patent drafters charge $75 to $100 per sheet to prepare drawings -- but you can draw them yourself! How to Make Patent Drawings is an essential guide for inventors who want to complete a cruci...

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.