| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 15 | |
| #2 | Germany | 1 | |
| #3 | France | 1 | |
| #4 | United Kingdom | 1 |
| # | Industry | |
|---|---|---|
| #1 | Machines | |
| #2 | Machine tools | |
| #3 | Consumer goods | |
| #4 | Mechanical elements | |
| #5 | Foods and drinks |
| # | Technology | |
|---|---|---|
| #1 | Unspecified technologies | |
| #2 | Laundering textiles | |
| #3 | Sawing | |
| #4 | Gearing | |
| #5 | Metal wire processing | |
| #6 | Dough making machines | |
| #7 | Grinding or polishing devices | |
| #8 | Punching metal | |
| #9 | Making gears or toothed racks |
| # | Name | Total Patents |
|---|---|---|
| #1 | Perkins Julian L | 11 |
| #2 | Croft Hiram D | 10 |
| #3 | John Oakley | 2 |
| #4 | Keltz Max Jacob | 1 |
| #5 | Deloghia Louis E | 1 |
| #6 | Hoelsch Edward H | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB809404A | Apparatus for forming springs | |
| US2655973A | Spring coiler | |
| US2543505A | Cutter bit | |
| US2082217A | Wringer | |
| US1959303A | Dough slicing apparatus | |
| US1966732A | Dough slicing apparatus | |
| US1877581A | Drive for washing machines or the like | |
| US1963244A | Safety wringer | |
| US1936731A | Machine tool | |
| US1981263A | Machine tool | |
| US1810368A | Gear construction | |
| US1875564A | Lubricating system | |
| US1936730A | Hobbing machine | |
| US1763177A | Method of laying out gears | |
| US1828908A | Tub | |
| US2027401A | Broaching machine |