Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D469863 | Drop front aspirator | — | 2003-02-04 |
| 5167471 | Anti-choke blender fitting | Gordon J. Peters | 1992-12-01 |
| 5031514 | Apparatus and method for controlling the mixing of atmospheric air with return air from a building | — | 1991-07-16 |
| 4607987 | Multiple lift pneumatic conveying air velocity control apparatus and method for controlling the pneumatic velocity in a multiple lift pneumatic conveying air velocity control apparatus | — | 1986-08-26 |
| 4602488 | Rotary mixing damper method and means | — | 1986-07-29 |
| 4495113 | Rotary mixing damper method and means | — | 1985-01-22 |
| 4202657 | Fluid pump | — | 1980-05-13 |
| 4183705 | Reciprocating airlock valve | — | 1980-01-15 |