Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9034110 | Method of cleaning tubes | Clifford L. Johns, Munaf Chasmawala, Manfred Schmidt | 2015-05-19 |
| 7878225 | Vacuum attachment and method | Clifford L. Johns, Daniel D. Sympson, Munaf Chasmawala, Manfred Schmidt | 2011-02-01 |
| 7861875 | Seal for tube | Clifford L. Johns, Daniel D. Sympson, Munaf Chasmawala, Manfred Schmidt | 2011-01-04 |
| 7836919 | Device for loading chemical reactor tubes | Clifford L. Johns, Daniel D. Sympson, Munaf Chasmawala, Manfred Schmidt | 2010-11-23 |
| D539441 | Tile surface | Clifford L. Johns, Daniel D. Sympson | 2007-03-27 |