Issued Patents All Time
Showing 1–20 of 20 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D567566 | Beverage bottle | — | 2008-04-29 |
| 6653826 | Alternating voltage detector | — | 2003-11-25 |
| 6377054 | Test device for electrical voltages with integrated illumination unit | — | 2002-04-23 |
| D455088 | Electrical test and measuring device | — | 2002-04-02 |
| D430855 | Rotary switch | — | 2000-09-12 |
| D427534 | Measuring instrument | — | 2000-07-04 |
| D423384 | Measuring instrument | — | 2000-04-25 |
| D410203 | Voltage tester | — | 1999-05-25 |
| 5859530 | Process for determining the phase sequence in a three-phase network (rotary current network) | — | 1999-01-12 |
| D401520 | Digital multi meter | — | 1998-11-24 |
| D400114 | Electronic hand held measuring instrument | — | 1998-10-27 |
| D391181 | Measuring apparatus | — | 1998-02-24 |
| D389419 | Voltage tester | — | 1998-01-20 |
| D382499 | Foldable measuring apparatus | — | 1997-08-19 |
| 5448162 | Instrument for testing and/or measuring electric magnitudes | — | 1995-09-05 |
| 5420503 | Phase sequence indicator | — | 1995-05-30 |
| 5418447 | Process and apparatus for electromagnetically locating and identifying electrical lines using a high frequency carrier wave | Martin Schwarz, Hans-Dieter Schuessele | 1995-05-23 |
| 5293113 | Test instrument for the display of electric voltages | Martin A. Schwartz | 1994-03-08 |
| 4870264 | Device for optically measuring the shading of translucent panes | — | 1989-09-26 |
| 4356442 | Electronic voltage and continuity testing unit | — | 1982-10-26 |