Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5653631 | Infinitely adjustable offset vent connector | John L. Andersen | 1997-08-05 |
| D342782 | Duct close elbow | Charles B. Anderson | 1993-12-28 |
| D342130 | Duct offset elbow | Charles B. Anderson | 1993-12-07 |
| D335174 | Vent which attaches to the rear of a clothes dryer and connects to the outlet in a wall | Charles B. Anderson | 1993-04-27 |
| 5158328 | Universal duct elbow and connector plate | Charles B. Anderson | 1992-10-27 |
| 5145217 | Universal dryer duct and vent | Charles B. Anderson | 1992-09-08 |
| 5133579 | Extendible-contractible, flexible, helical conduit and coupling assembly | Charles B. Anderson | 1992-07-28 |
| 5121948 | Dryer duct and vent assembly including a flexible duct portions | Charles B. Anderson | 1992-06-16 |