I offer a collection of 60 historical patents (including design patents) of wellknown company ZIPPO Mfg. Co., published between 1923 and 2010.
They are from USA and Great Britain (47 patents, all in english), France (in french), Germany and Austria (all in German) and busy mostly with lighter technique and some others (especially watches).
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 wellknown company which you find nowhere in the world in this good quality / completeness. You can learn a lot about the technical details of old lighters 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.