Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5669839 | Method of metering a flowable lubricant of a chain drive | Walter Graf, Anton May | 1997-09-23 |
| 5634531 | Electrically powered automatic lubricant dispenser | Walter Graf | 1997-06-03 |
| 5547043 | Electrochemically reactive element for lubricant dispenser | Walter Graf | 1996-08-20 |