| 6026170 |
Electronic stethoscope with idealized bell and idealized diaphragm modes |
Joel R. Dufresne, Daniel V. Hulse |
2000-02-15 |
| 5932849 |
Stethoscope having microphone therein |
— |
1999-08-03 |
| 5852263 |
Stethoscope having microphone in stem of chestpiece |
— |
1998-12-22 |
| D403065 |
Stethoscope component |
Edward J. Moe, Joy A. Packard, Thomas J. Packard, Thomas A. Turgeon, Thomas W. Reeder |
1998-12-22 |
| 5663532 |
Ergonometric stethoscope chestpiece |
Edward J. Moe, Joy A. Packard, Thomas J. Packard, Thomas W. Reeder, Thomas A. Turgeon |
1997-09-02 |
| D379512 |
Ergonometric stethoscope chestpiece |
Edward J. Moe, Joy A. Packard, Thomas J. Packard, Thomas A. Turgeon, Thomas W. Reeder |
1997-05-27 |
| 5418686 |
Electrical safety system for electrical device |
David Fischer, Jonathan C. Platt, William L. Sondermann |
1995-05-23 |
| 5411534 |
Electrical safety system for electrical device |
David Fischer, Jonathan C. Platt, William L. Sondermann |
1995-05-02 |
| 5367575 |
Electronic stethoscope having battery carriage |
Gerald E. Drake |
1994-11-22 |
| 5347583 |
Electronic stethoscope having binaural earpiece |
Jon A. Kirschhoffer |
1994-09-13 |
| D338269 |
Ergonometric stethoscope chestpiece |
Joel R. Dufresne, Gerald E. Drake, Curt Hostager, deceased, legal representative Hostager |
1993-08-10 |
| D337381 |
Ergonometric stethoscope chestpiece |
Joel R. Dufresne, Gerald E. Drake, Curt Hostager, deceased, by Ray S. Hostager, legal representative |
1993-07-13 |
| 5204500 |
Ergonometric stethoscope chestpiece |
Joel R. Dufresne, Curt Hostager, deceased |
1993-04-20 |
| 4926864 |
Biological tissue stimulator with time-shared logic driving output timing and high voltage step-up circuit |
Joel R. Dufresne |
1990-05-22 |
| D303430 |
Transcutaneous electrical nerve stimulator |
John E. Studer, Joel R. Dufresne |
1989-09-12 |
| 4803986 |
Ergonometric transcutaneous electrical nerve stimulator |
Joel R. Dufresne, John E. Studer |
1989-02-14 |
| 4706674 |
Electrical stimulator for biological tissue utilizing output current monitor |
Joel R. Dufresne |
1987-11-17 |
| 4699143 |
Electrical simulator for biological tissue having remote control |
Joel R. Dufresne |
1987-10-13 |
| 4686991 |
Electrical stimulator for biological tissue utilizing linear current output circuit |
Joel R. Dufresne |
1987-08-18 |
