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

Patent documents are all in English and mainly deal with various cameras (folding camera, roll film camera...) or lens technology (Heliar, Dynar, Oxyn) or parts thereof .The collection I have compiled is the world's most comprehensive patent overview of this company's technology.

Delivery is as pdf file (*.pdf) collection on a CD (not as printed book!). For viewing and printing you need only the wellknown Acrobat Reader or a similar pdf reader. Each file contains one complete p a t e n t.

Also included is an Excel (*.xls - file) list with patent numbers, datas of issue, inventor name and patent titles. This list is linked directly to the patent files so that each patent will be open easily if you click on the link.

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