 Electronic File Wrappers |  Electronic Patent Documents |  Paper Patent Documents | Current as of: June, 1999
|  and Services |
| DF | CLASS NOTES | |
| 1 | DD | ORGANIC COMPOUNDS |
| * | DD | (This subclass presently has no patents. It is intended to be the generic subclass for the 532-570 series of class when Class 260 is abolished. It does have a glossary of terms used in that serie). |
| * | DD | NOTE: An alternative search for U.S. patents based upon a modification of the European Patent Office Classification, for portions of the subject matter of this or its daughter classes, may be found in Class 987, ORGANIC COMPOUNDS CONTAINING A Bi, Sb, As, OR P ATOM OR CONTAINING A METAL ATOM OF THE 6TH TO 8TH GROUP OF THE PERIODIC SYSTEM. |