| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 11 | |
| #2 | Canada | 1 |
| # | Industry | |
|---|---|---|
| #1 | Furniture and games | |
| #2 | Machines | |
| #3 | Engines, pumps and turbines | |
| #4 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Kitchen equipment | |
| #2 | Unspecified technologies | |
| #3 | Cyclically operating valves | |
| #4 | Venting or aerating devices | |
| #5 | Clutches and brakes |
| # | Name | Total Patents |
|---|---|---|
| #1 | Burkhardt Otto M | 12 |
| Publication | Filing date | Title |
|---|---|---|
| US2637463A | Cooking utensil | |
| US2626560A | Pressure cooker | |
| US2463516A | Vent device for pressure cookers | |
| US2598220A | Cover sealing means for cooking utensils | |
| US2626726A | Cooking utensil | |
| US2524558A | Seal for pressure cookers | |
| US2405940A | Selector cock | |
| US2411650A | Valve linkage | |
| US2433089A | Clearance regulating device for internal-combustion engine valves | |
| US2418110A | Clearance regulator | |
| US2183668A | Automatic adjustment means | |
| CA410589A | Valve tappet clearance regulator |