| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 7 | |
| #2 | France | 5 | |
| #3 | Switzerland | 3 | |
| #4 | Spain | 3 | |
| #5 | Austria | 2 | |
| #6 | Finland | 2 | |
| #7 | United States | 2 | |
| #8 | Greece | 1 |
| # | Industry | |
|---|---|---|
| #1 | Packaging and shipping | |
| #2 | Consumer goods |
| # | Technology | |
|---|---|---|
| #1 | Closing and opening bottles | |
| #2 | Hairstyling and cosmetic |
| # | Name | Total Patents |
|---|---|---|
| #1 | Bohumil Polak | 4 |
| #2 | Grodetzky Polak | 3 |
| #3 | Hacklander Max | 1 |
| #4 | Lerk Felix Georg | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US2061208A | Can opener | |
| US2012204A | Can opener | |
| ES131998A1 | Improvements in the appliances to open the cans. | |
| ES131062A1 | A new device to open cans of preserves. | |
| ES126783A1 | Device for cutting special tin cans. |