I offer a collection of 77 patents of the former company DALTON ADDING MACHINE COMPANY. which were published between 1911 and 1927. 

They are from USA (72 documents, all in english) and the rest from Great Britain, France, Germany and Switzerland (in English, French or German).

They are busy with inventions from this company in the field of adding machines, often "adding and recording machine", partially also typewriting technique.

All patents are complete, that means contain the full text and all drawings (see example). You will get a professional 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 camera 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!

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 71 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 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.