Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4470505 | Method and apparatus for storing, mixing and delivering dental amalgam | Robert Korwin | 1984-09-11 |
| 4449645 | Dental container and amalgam dispensing method | Robert Korwin | 1984-05-22 |
| 4424034 | Arrangement for, method of, and device for use in taking dental impressions and in restoring teeth | Robert Korwin | 1984-01-03 |
| 4230914 | System for and method of indicating intruder presence on telephone lines, and method of installation of telephone intruder alarm system | Eric Cohen | 1980-10-28 |