| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Canada | 14 | |
| #2 | Australia | 4 | |
| #3 | Brazil | 2 | |
| #4 | German Democratic Republic | 2 | |
| #5 | Argentina | 1 | |
| #6 | Switzerland | 1 | |
| #7 | Czechoslovakia | 1 | |
| #8 | Spain | 1 | |
| #9 | Hungary | 1 | |
| #10 | Singapore | 1 | |
| #11 | USSR (Union of Socialist Soviet Republics) | 1 | |
| #12 | United States | 1 | |
| #13 | South Africa | 1 |
| # | Industry | |
|---|---|---|
| #1 | Machines | |
| #2 | Engines, pumps and turbines | |
| #3 | Civil engineering | |
| #4 | Mechanical elements | |
| #5 | Telecommunications |
| # | Technology | |
|---|---|---|
| #1 | Pumps | |
| #2 | Unspecified technologies | |
| #3 | Unspecified technologies | |
| #4 | Venting or aerating devices | |
| #5 | Scaffolding | |
| #6 | Preparing clay | |
| #7 | Shafts | |
| #8 | Ladders | |
| #9 | Construction of bridges | |
| #10 | Transmission systems |
| # | Name | Total Patents |
|---|---|---|
| #1 | Schwing Friedrich | 16 |
| #2 | Schwing Gerhard | 3 |
| #3 | Nawroth Werner | 3 |
| #4 | Heckmann Horst | 3 |
| #5 | Meinken Bernhard | 2 |
| #6 | Simnovec Andrej | 2 |
| #7 | Guethoff Wilfred | 1 |
| #8 | Schwing Friedrich Dipl Ing | 1 |
| #9 | Metzelder Wolfgang | 1 |
| #10 | Von Eckardstein Karl-Ernst | 1 |
| Publication | Filing date | Title |
|---|---|---|
| ES8705791A1 | Movable mixer or concrete mixer, preferably with emptying by means of contra-rotation, for construction materials, particularly concrete | |
| CA1299152C | Method and apparatus for pneumatically discharging hydromechanically conveyed hydraulic building material for underground operations | |
| CA1183063A | Multi-way valves for pumps for conveying heavy flowable materials |