Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4383761 | Scope for viewing the internal surface of bores and similar cavities | — | 1983-05-17 |
| 4373811 | Scope for viewing the internal surface of a bore or similar cavity | — | 1983-02-15 |
| 4249795 | Scope for viewing the internal surface of a bore or similar cavity | — | 1981-02-10 |
| 4201086 | Viewing rod for determining the level of liquid within a receptacle | — | 1980-05-06 |