| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 11 | |
| #2 | United Kingdom | 4 | |
| #3 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Transport | |
| #2 | Electrical machinery and energy | |
| #3 | Packaging and shipping | |
| #4 | Engines, pumps and turbines | |
| #5 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | Vehicle tyre repairing | |
| #2 | Vehicle parts | |
| #3 | Vehicle servicing | |
| #4 | Load transportation vehicles | |
| #5 | Pumps | |
| #6 | Vehicle seats | |
| #7 | Containers for goods storage | |
| #8 | Construction of roads | |
| #9 | Electrically-conductive connections | |
| #10 | Electric switches |
| # | Name | Total Patents |
|---|---|---|
| #1 | Lichtenfeld Engelhard | 11 |
| #2 | Rennecke Guenther | 2 |
| #3 | Behrens Rudolf | 2 |
| #4 | Engelhard Lichtenfeld | 1 |
| #5 | Koch Gustav Ad | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB1103558A | Road way mat | |
| GB1042084A | Combination motor vehicle | |
| GB806689A | A new or improved tyre pressure indicator | |
| US2756297A | Current collector for relatively movable parts, particularly for automotive tire control | |
| GB705324A | Improvements in electrical current collectors |