Inventions

About this book

I'he contents of this Abridgment Glass may be seen from its Subject-matter Index, which includes all index headings, subheadings, and subdivisions allotted to this Class, as well as crossreferences under them, although there may be no cases affected within the period covered by this volume. A revised edition of the Abridgment-Class and Iruleo: ](ey showing Abridgment Classes and Index Headings to which inventions are assigned in the official publications of the Patent

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About the authors

Alex Frith

Alex Frith has been a children’s nonfiction author since 2005. Working exclusively for Usborne Publishing, he has written over fifty books covering almost any subject you can think of, from the origins of the Universe to the meaning behind world religions, from extinct animals to prototype AIs. [source](https://www.simonandschuster.com/authors/Alex-Frith/135505353#:~:text=Alex%20Frith%20has%20been%20a,extinct%20animals%20to%20prototype%20AIs.)