They are busy with various inventions / developments of this company, especially radio receivers, but also loudspeakers, discharge lamps, thermoionic valves and a few more.
All patents are complete, that means contain the full text and all drawings (see example).
You will get a phenomenal overview about the technical developments of this company which you find nowhere in the world in this good quality / completeness. You can learn a lot about the technical details of old radio technique.
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!
Please see also my other patent collection with patents of this company sfter 1945!
Shipping / Transmission of the files:
You will have normally the item within ONE DAY!
You can download this patent collection after payment from an internet source. I will send the text of the link for downloading a zip-File of about 65 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" modus or see your emails in your ebay email account, where the message to the buyer should also arrives. After downloading please unzip the file. Then you will get a data directory with the pdf - patent files. I will send the link for downloading not later than one day after payment. Then you have 10 days time to download your patent collection of historical patents.