| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 4 | |
| #2 | WIPO (World Intellectual Property Organization) | 3 | |
| #3 | Canada | 2 | |
| #4 | EPO (European Patent Office) | 2 |
| # | Industry | |
|---|---|---|
| #1 | Electrical machinery and energy | |
| #2 | Machines | |
| #3 | Audio-visual technology | |
| #4 | Consumer goods |
| # | Technology | |
|---|---|---|
| #1 | Dynamo-electric machines | |
| #2 | Unspecified technologies | |
| #3 | Sound-producing devices | |
| #4 | Loudspeakers and microphones |
| # | Name | Total Patents |
|---|---|---|
| #1 | Hisey Bradner L | 11 |
| Publication | Filing date | Title |
|---|---|---|
| US5355045A | Torque reaction transfer in dynamoelectric machines having energy-efficient stator constructions | |
| US5208503A | Energy-efficient ferromagnetic stator and core apparatus | |
| US5191618A | Rotary low-frequency sound reproducing apparatus and method |