Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5219208 | Scrubber for dispersing dust generated by longwall shearers | Chung F. Liao | 1993-06-15 |
| 5145236 | Method and apparatus for controlling dust produced by a continuous miner | Chung F. Liao | 1992-09-08 |
| 5064022 | Ladder apparatus and method for large mobile equipment | — | 1991-11-12 |
| 5039315 | Method and apparatus for separating particulates from a gas stream | Chung F. Liao | 1991-08-13 |
| D306146 | Collar bar | — | 1990-02-20 |
| 4458401 | Sleeving method and apparatus | Richard P. McCally | 1984-07-10 |
| 4441389 | Chain severing apparatus and method | Richard P. McCally | 1984-04-10 |
| 4386866 | Fountain pen cartridge | William E. Tucker | 1983-06-07 |
| D266259 | Fountain pen refill ink cartridge | William E. Tucker | 1982-09-21 |