| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 10 | |
| #2 | Canada | 2 |
| # | Industry | |
|---|---|---|
| #1 | Consumer goods | |
| #2 | Thermal processes | |
| #3 | Foods and drinks | |
| #4 | Chemical engineering | |
| #5 | Machines | |
| #6 | Furniture and games | |
| #7 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | Ice-boxes | |
| #2 | Cocoa and sweets | |
| #3 | Producing ice | |
| #4 | Refrigerators | |
| #5 | Unspecified technologies | |
| #6 | Brushes | |
| #7 | Mixing | |
| #8 | Hydraulic engineering | |
| #9 | Toys |
| # | Name | Total Patents |
|---|---|---|
| #1 | Hoffman Charles T | 8 |
| #2 | Thomas Hoffman Charles | 2 |
| #3 | Mulhollen Scott W | 1 |
| #4 | Bruehl Anton | 1 |
| #5 | Groff Emory L | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US3462960A | Mooring device for boats | |
| US2000023A | Ice cream freezer for refrigerators | |
| US1896589A | Shaving brush | |
| US2000022A | Ice cream freezer | |
| US2000021A | Ice cream freezer | |
| US1852707A | Refrigerator | |
| US1760498A | Toy electric motor | |
| US1852163A | Means for defrosting refrigerating unit | |
| US1886953A | Means for automatically defrosting refrigerating units | |
| US1916315A | Means for automatically defrosting refrigerating units | |
| CA336675A | Refrigerating unit defrosting means | |
| CA330608A | Refrigerator defrosting device |