Issued Patents 2011
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8047456 | Spray nozzle with adjustable arc spray elevation angle and flow | Carl L. C. Kah, III | 2011-11-01 |
| 7996957 | Centrifugal dirt separation configurations for household-type and shop-type vacuum cleaners | — | 2011-08-16 |
| D636459 | Rotary nozzle head | Carl L. C. Kah, III, Weiming Feng | 2011-04-19 |
| 7916884 | External ear insert for hearing comprehension enhancement | — | 2011-03-29 |