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Curta Calculator Patents Full-image On Cd-rom For Sale
NOTICE TO : ALL PATENTS IN THIS CD-ROM COLLECTION
HAVE ALWAYS BEEN IN THE PUBLIC DOMAIN AND HAVE NEVER BEEN COPYRIGHTED. THEY ARE
GOVERNMENT DOCUMENTS ISSUED BY THE U.S. PATENT AND TRADEMARK OFFICE AND AS SUCH
ARE NOT SUBJECT TO COPYRIGHT LAWS. I AM THE OWNER OF THE COPYRIGHT ON THIS SPECIFIC PATENT COLLECTION.
Here are the29 key patents leading to the famous Herzstark Curta rotary calculator, presented for the first time as full-image PDF files on a CD-ROM. Fully printable.
Requires free download Adobe Acrobat Reader or equivalent (free download) & Mac or PC-type computer with CD drive.
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Curta Calculator Patents Full-image On Cd-rom: $19