Inventing for Fun and Profit - Softcover

Hallock, Robert Lay

 
9780517533123: Inventing for Fun and Profit

Synopsis

A guide to the procedures involved in inventing and in patenting, promoting, and marketing inventions describes the author's experiences with four of his numerous creations

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Other Popular Editions of the Same Title

9780517533116: Inventing for Fun and Profit

Featured Edition

ISBN 10:  0517533111 ISBN 13:  9780517533116
Publisher: Crown Pub, 1978
Hardcover