| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 12 | |
| #2 | Canada | 5 |
| # | Industry | |
|---|---|---|
| #1 | Foods and drinks | |
| #2 | Machines | |
| #3 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Dough making machines | |
| #2 | Unspecified technologies | |
| #3 | Unspecified technologies | |
| #4 | Mechanical control devices | |
| #5 | Clutches and brakes |
| # | Name | Total Patents |
|---|---|---|
| #1 | Belshaw Thomas E | 17 |
| #2 | Belshaw Walter R | 2 |
| Publication | Filing date | Title |
|---|---|---|
| US3154027A | Mandrel for doughnut machine | |
| US3175415A | Adjustable drive for doughnut machines | |
| US3295468A | Dough forming machine | |
| US3129675A | Raised doughnut forming machine | |
| US3003439A | Dough forming machine | |
| US2921541A | Machine for forming french doughnuts | |
| US2825494A | Dough dispenser | |
| US2881716A | Powered dough former | |
| US2828700A | Dough former | |
| US2742198A | Dough dispensing machine | |
| US2637282A | Dough former | |
| US2643621A | Dough former | |
| CA686022A | Dough forming machine | |
| CA757387A | Mandrel for doughnut machine | |
| CA641752A | Machine for forming french doughnuts | |
| CA590025A | Dough dispenser | |
| CA585711A | Dough former |