| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 8 | |
| #2 | United States | 4 | |
| #3 | United Kingdom | 3 |
| # | Industry | |
|---|---|---|
| #1 | Packaging and shipping | |
| #2 | Optics |
| # | Technology | |
|---|---|---|
| #1 | Cranes | |
| #2 | Optical systems |
| # | Name | Total Patents |
|---|---|---|
| #1 | Heinrich Reichmann | 3 |
| #2 | Kirchhoff Kurt | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US3936155A | Three-element projection lenses | |
| GB687923A | Improvements relating to grabs | |
| US1886426A | Automatic grab | |
| US1770343A | Grab | |
| GB336834A | Improvements in and relating to grabs | |
| US1769390A | Automatic grab | |
| GB302091A | Improvements in or relating to self-adjusting grabs |