EBOOK American Writing Instrument Patents Vol. 2: 1911-1945
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Available at last in a convenient electronic, searchable format, this is the second volume of the most comprehensive study of pen and pencil patents ever published, covering patents issued from 1911 to 1945 in the same, easy to use format as the first volume. Patents are organized into sections by date/number, inventor, description, assignee and location, with full-page images of interesting patents accompanied by commentary in between sections.
Originally published in 2014; hard copies sold out.
376 pages, ISBN 978-0-9840382-4-4