The most a researcher can expect for detail is a full text document in English with drawings, in other words, the complete original document. Explicit listings of chemicals, diseases and other content can make the document easier to use.
All databases discussed here involve compromises.
The precision features of the databases are summarized in Table VII . For U.S. Patents Fulltext on Dialog, the text can either be displayed or be sent via Internet or MCIMail. The WPI abstract is often good enough to supply valuable detail. Drawings are recently becoming more available in electronic form. WPI on Orbit and Dialog allow the searcher to view the front page drawing.