| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 13 | |
| #2 | United Kingdom | 2 |
| # | Industry | |
|---|---|---|
| #1 | Machine tools | |
| #2 | Machines | |
| #3 | Electrical machinery and energy | |
| #4 | Engines, pumps and turbines | |
| #5 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | Sawing | |
| #2 | Unspecified technologies | |
| #3 | Making screws | |
| #4 | Cables and insulators | |
| #5 | Swimming pools | |
| #6 | Pumps | |
| #7 | Soldering, welding and flame cutting |
| # | Name | Total Patents |
|---|---|---|
| #1 | Benjamin Grob | 13 |
| #2 | Theodore Grob | 7 |
| Publication | Filing date | Title |
|---|---|---|
| US3142207A | Grooving method and apparatus | |
| US3094888A | Roller tool mounting and driving means | |
| US2905033A | Groove rolling machine | |
| US2471682A | Electric fence post | |
| US2372826A | Filing machine | |
| US2364969A | Work feed | |
| US2253515A | Band saw | |
| GB451169A | Improvements in sawing machines | |
| US2322684A | Machine tool | |
| GB424551A | Improvements in filing machines | |
| US1998083A | Pump | |
| US2192788A | Filing machine | |
| US1958477A | Filing machine | |
| US1949742A | Filing machine | |
| US1674109A | Method of electric welding |