Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6520281 | Elastomeric anti-microbial stethoscope diaphragm | Robert Potash, Lewis W. Chappel | 2003-02-18 |
| 6513621 | Method of producing and making use of ear tips having a filled airtight chamber | Robert Potash, Lewis W. Chappel | 2003-02-04 |