| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 7 | |
| #2 | Canada | 6 |
| # | Industry | |
|---|---|---|
| #1 | Packaging and shipping | |
| #2 | Electrical machinery and energy | |
| #3 | Machines | |
| #4 | Environmental technology | |
| #5 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Closing and opening bottles | |
| #2 | Unspecified technologies | |
| #3 | Electric switches | |
| #4 | Mechanical control devices | |
| #5 | Gas-flow silencers for machines |
| # | Name | Total Patents |
|---|---|---|
| #1 | Wiswell Ozro N | 13 |
| Publication | Filing date | Title |
|---|---|---|
| US2040586A | Can opener | |
| US2040585A | Opening and pouring device for cans | |
| US2099322A | Means for opening containers | |
| US1738862A | Pull handle with automatic lock | |
| US1498827A | Cut-out-operating lever for automobiles | |
| US1067452A | Electric-switch-operating mechanism. | |
| CA356246A | Opening and pouring device for cans | |
| CA356243A | Can opener | |
| CA356244A | Container opener | |
| CA353439A | Container opener | |
| CA356245A | Container opener | |
| CA360010A | Can opener and dispenser | |
| US1075238A | Electrical switch. |