Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6879063 | Displacement device | Petrus C.M. Frissen, Johan Cornelis Compter, Erik R. Loopstra | 2005-04-12 |
| 6531793 | Displacement device | Petrus Carolus Maria Frissen, Johan Cornelis Compter, Erik R. Loopstra | 2003-03-11 |
| 6054784 | Positioning device having three coil systems mutually enclosing angles of 120.degree. and lithographic device comprising such a positioning device | Frank Bernhard Sperling, Erik Roelof Loopstra | 2000-04-25 |