Old/antique dividers,calipers,pair of compasses,ellipsograph: Infos 1850-1920

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Old/antique dividers,calipers,pair of compasses,ellipsograph: Infos 1850-1920:
$14.27

I offer a collection of over470 (!) old patents arounddividers/pair of compasses, calipers, ellipsographs, beam compasses and some other drawing instruments or parts/accessories of it.

They comes fromUSAand Great Britain between1850 and 1920 (all in english).

All patents are complete, that means contain the full text and all (often beautiful and very informative - see example) drawings.

This is the world best overview about patent situation ofthis technique field in thislong time period!

Delivery is as pdf-file collection (*.pdf) on CD (not as printed book!). Each file contains one complete patent. You need only the wellknown free programme Acrobat Reader or a similar one to open the files. You can also print each file. If you take for example \"antique style paper\" you can make nice pictures for wall decoration for yourself.

Also included is an Excel list (*.xls) with patent numbers, datas of issue, patent titles (sometimes shortened) and partly inventor/owner names.

The listis linked directly to the patent files so that each patent will be open easily if you click on the link. This is a very comfortable way to exploit the extensive document material.

It is not really a problemif you do not have the programme Excel from Microsoft. Look for \"Excel Viewer\" at google and you will find freeware version of an Excel Viewer programme. So you canopen and print the Excel table without problem!

Of course you can open each patent file also direct without using of the Excel table!!

Shipping worldwide as airmail letter. You can also buy more patent collections - the shipping price will not increase!

Payment is possible by Paypal, by international bank account transfer (especially for buyers in the EURO region) or as c a s h in letter (but than at your risk).