Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10871238 | Removable valve guard for ampoules | Charles Michael Birtcher | 2020-12-22 |
| 8002247 | Cross purge valve and container assembly | Charles Michael Birtcher, Thomas Andrew Steidl | 2011-08-23 |
| 6526824 | High purity chemical container with external level sensor and liquid sump | Geoffrey L. Chase, Lee Senecal, Robert Sam Zorich, David A. Roberts | 2003-03-04 |
| 5675963 | Mechanism for accumulating a stack of articles and for then dropping the stack | John G. Nicholson, David Lowell Miller | 1997-10-14 |
| 4433561 | Gauge changing apparatus | Reinhards Vitols, Steven Walkinshaw, Hywel R. Davies, Adrian Michael Woodward | 1984-02-28 |
| 4336697 | Method of and mechanism for transferring knitted fabric from a knitting machine to a magazine | Reinhards Vitols, Adrian Michael Woodward, Gordon Richard Wray | 1982-06-29 |