| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 11 | |
| #2 | Austria | 2 | |
| #3 | Switzerland | 2 | |
| #4 | France | 2 | |
| #5 | Canada | 1 | |
| #6 | Germany | 1 | |
| #7 | United Kingdom | 1 |
| # | Industry | |
|---|---|---|
| #1 | Transport | |
| #2 | Engines, pumps and turbines | |
| #3 | Machines | |
| #4 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Vehicle servicing | |
| #2 | Cyclically operating valves | |
| #3 | Unspecified technologies | |
| #4 | Unspecified technologies | |
| #5 | Supplying combustion engines | |
| #6 | Lubricating | |
| #7 | Venting or aerating devices | |
| #8 | Rotary-pistons |
| # | Name | Total Patents |
|---|---|---|
| #1 | Folberth William M | 10 |
| #2 | Folberth Fred G | 6 |
| #3 | Folberth Frederick G | 3 |
| #4 | Specialty Company The Folberth | 2 |
| #5 | Skinner Stephen G | 1 |
| #6 | Mitchel Folberth William | 1 |
| Publication | Filing date | Title |
|---|---|---|
| DE427927C | Device for cleaning windshields on motor vehicles | |
| GB243774A | Improvements relating to motorcar wind screen and like panel cleaners and in wind screen cleaner and like fluid motors | |
| US1518058A | Windshield cleaner | |
| US1493975A | Attachment for motor vehicles | |
| US1475625A | Windshield cleaner | |
| US1507821A | Valve for windshield cleaners | |
| US1507310A | Lubricating system | |
| US1472644A | Windshield cleaner | |
| US1487405A | Suction motor for windshield cleaners | |
| US1489996A | Windshield cleaner | |
| US1438229A | Windshield cleaner | |
| US1516722A | Windshield cleaner | |
| US1405773A | Windshield-cleaning apparatus | |
| CA255539A | Windshield cleaner |