Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5446928 | Lift to flush toilet stool | — | 1995-09-05 |
| 5234322 | Proportioning pump improvements | Norman W. Scheid, Donald C. Bryant | 1993-08-10 |
| 5055008 | Proportionating pump for liquid additive metering | Norman W. Scheid, Donald C. Bryant | 1991-10-08 |
| D308161 | Furniture castor | — | 1990-05-29 |
| 4821369 | Castors braked either in response to a load or to the absence of a load | — | 1989-04-18 |
| 4731901 | Castor wheel with non continuous ribs for lubricant | — | 1988-03-22 |
| 4210175 | Chemical injection assembly | Norman W. Scheid | 1980-07-01 |