| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 9 | |
| #2 | Canada | 3 | |
| #3 | United Kingdom | 2 | |
| #4 | Germany | 1 | |
| #5 | Denmark | 1 | |
| #6 | Japan | 1 | |
| #7 | Norway | 1 | |
| #8 | Sweden | 1 |
| # | Industry | |
|---|---|---|
| #1 | Thermal processes | |
| #2 | Machines | |
| #3 | Packaging and shipping | |
| #4 | Machine tools |
| # | Technology | |
|---|---|---|
| #1 | Producing ice | |
| #2 | Unspecified technologies | |
| #3 | Presses | |
| #4 | Refrigerators | |
| #5 | Transport or storage devices | |
| #6 | Air-conditioning |
| # | Name | Total Patents |
|---|---|---|
| #1 | Hagen William F | 10 |
| #2 | Hagen W | 3 |
| #3 | Douglas Edward O | 2 |
| #4 | Ottman Everett S | 1 |
| #5 | Uiriamu Efu Haagen | 1 |
| #6 | Douglas E O | 1 |
| #7 | Hagen W F | 1 |
| #8 | F Hagen William | 1 |
| #9 | O Douglas Edward | 1 |
| #10 | Douglas E | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US4651537A | Ice making machine | |
| US4622832A | Ice making machine | |
| US4531380A | Ice making machine | |
| JPS5618272A | Ice making machine | |
| US4168937A | Ice rake with automatic leveling hoist | |
| US4153404A | Apparatus for producing uniform blocks of ice | |
| US4044568A | Space heating and cooling system | |
| US3797267A | Ice rake control | |
| US3842993A | Ice rake for ice making apparatus | |
| US3546896A | Freezer plates and water distribution for icemaking machine | |
| CA886279A | Freezer plates and water distribution for ice making machine |