Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6253609 | Liquid level gauge with hinged float arm | Herbert G. Ross, Jr. | 2001-07-03 |
| 6216534 | Liquid level gauge with hinged float arm | Herbert G. Ross, Jr. | 2001-04-17 |
| 6170328 | Lever gauge with hinged arms | Herbert G. Ross, Jr. | 2001-01-09 |
| 5859692 | Height sensor and air spring apparatus incorporating the same in the air chamber | Herbert G. Ross, Jr. | 1999-01-12 |
| 5374790 | Liquid level switch assembly | — | 1994-12-20 |
| 4950085 | Multi-positional thermometer | — | 1990-08-21 |