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History of RCA 1920-35: receiver, amplifier, loud speaker, phonograph, tube For Sale
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History of RCA 1920-35: receiver, amplifier, loud speaker, phonograph, tube:
$16.50
Ioffer a very large collection ofmore than1700 (!!!)old US patents of the wellknown company RCA (Radio Corporation of America), publishedbetween 1920 and 1935. All patents are complete, that means contain the full text and all (often very detailed - see example)drawings. You will find patents of various things likeradios/receivers, amplifiers, wireless telegraphy technique,phonographs, talking machines, tubesanda lotmore. The patent collection - made by the seller - is the world best patent overview for this company over this long time periode! Delivery is as pdf file collectionon a CD(not printed!). Each file contains one complete patent. Also included is an Excel list with most of patent titles, datas of issueand also inventors of patents.The list is linked directly to the patent files so that each patent will be open easily if you click on the link. To open this Excel file you can use Excel, Excel viewer or any other common open office programme. Of course you can open each patent file also direct without using of the Excel table!! Copyright of the CD has only the seller! Shipping worldwide as airmail letter.You can also buy more patent collections - the shipping price will not increase!
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