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发表于2024-11-11
Secrets from an Inventor's Notebook pdf epub mobi txt 电子书 下载 2024
When the fuzz from his sweater was pulled off by a brick wall he was leaning against, Maurice Kanbar had a brainstorm. Soon he had patented, produced, and successfully promoted the D-Fuzz-It sweater comb, and made his first fortune at the age of twenty-two. In this engaging "master class" Kanbar's real world hits and misses illustrate the concrete steps every inventor must follow to successfully take his product to market.
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Secrets from an Inventor's Notebook pdf epub mobi txt 电子书 下载 2024