I offer a collection of 82 patents of AMERICAN PIANO Co., published between 1908 and 1931 in the USA, Great Britain, Australia (73, all in english), rest from Germany and France.
They are in most cases busy with various piano technique inventions of this company (grand piano, player / automatic pianos).
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 download this patent collection after payment. I will send a link for downloading a zip-File of about 63 MB with the patent collection. 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 via the ebay message system (please see your news at "My ebay"). Then you have 10 days time to download your patent collection of historical patents.