Samuel Ruben: vacuum tube/condenser/rectifier/battery

Description: I offer a collection of over 300 patents from Samuel Ruben or his company, published between 1916 and 1960 in USA or Great Britain (all in english). They are busy with a great number of inventions of the wellknown inventor Samuel Ruben. He invented the dry electrolytic aluminum capacitor, the solid-state magnesium/cupric sulfide rectifier (a device that converted regular household electric current for use in radios), and a vacuum tube relay, the quick heater vacuum tube, and the concept of a balanced-cell mercury battery. All patents are complete, that means contain the full text and all drawings (see example). You will get a professional overview about the inventions of this company which you find nowhere in the world in this good quality / completeness. Delivery is as a zipped file with a patent collection of pdf files (not printed, not a book). You need only the wellknown free programme Acrobat Reader or a similar one to open the files. You can also print each file. Copyright of the patent collection has only the seller! Shipping: You can d o w n l o a d this patent collection after payment from an internet source. I will send the text of the link for d o w n l o a d i n g a zip-File of about 107 MB with the patent collection as message to the buyer via the ebay system. Please have a look at your messages in the "My ebay" mode or see your emails in your ebay email account, where the message to the buyer should also arrives. After d o w n l o a d i n g please unzip the file. Then you will get a data directory with the pdf - patent files. I will send the link not later than one day after payment. Then you have 10 days time to d o w n l o a d your patent collection of historical patents.Transmitting by download from internet save us a lot of time and shipping costs and is secure!

Price: 12.5 USD

Location: Dresden

End Time: 2024-12-25T23:38:30.000Z

Shipping Cost: 0 USD