| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United Kingdom | 5 | |
| #2 | United States | 4 | |
| #3 | Canada | 2 |
| # | Industry | |
|---|---|---|
| #1 | Electrical machinery and energy | |
| #2 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Dynamo-electric machines | |
| #2 | Magnets and transformers | |
| #3 | Nails |
| # | Name | Total Patents |
|---|---|---|
| #1 | William Kober | 2 |
| #2 | Bojarski Norbert N | 2 |
| #3 | Kober William | 2 |
| Publication | Filing date | Title |
|---|---|---|
| US3229138A | Dynamoelectric machine | |
| US3154756A | Variable voltage transformer | |
| US3152311A | Variable voltage transformer | |
| GB968081A | Improvements in or relating to a dynamoelectric machine | |
| GB939061A | Alternating current machines | |
| US3121814A | Dynamoelectric machine | |
| CA692711A | Dynamoelectric machine | |
| CA683573A | Alternating current generator |