Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8155339 | Air-droppable loudspeaker | — | 2012-04-10 |
| 7167827 | Audio information leaflet system | — | 2007-01-23 |
| 6535612 | Electroacoustic transducer with diaphragm securing structure and method | James J. Croft, III | 2003-03-18 |
| 6393129 | Paper structures for speaker transducers | Elwood G. Norris, James J. Croft, III | 2002-05-21 |