| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 2 | |
| #2 | Belgium | 1 | |
| #3 | German Democratic Republic | 1 | |
| #4 | Denmark | 1 | |
| #5 | Finland | 1 | |
| #6 | France | 1 | |
| #7 | United Kingdom | 1 | |
| #8 | Italy | 1 | |
| #9 | Japan | 1 | |
| #10 | Netherlands | 1 | |
| #11 | Norway | 1 | |
| #12 | Sweden | 1 | |
| #13 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Measurement | |
| #2 | Audio-visual technology | |
| #3 | Consumer goods |
| # | Technology | |
|---|---|---|
| #1 | Measuring volume | |
| #2 | Analysing materials | |
| #3 | Loudspeakers and microphones | |
| #4 | Radio navigation | |
| #5 | Sound-producing devices |
| # | Name | Total Patents |
|---|---|---|
| #1 | Magri Antonio | 3 |
| #2 | Magri A | 2 |
| #3 | Antonio Maguri | 1 |
| Publication | Filing date | Title |
|---|---|---|
| DE2744823A1 | Transceiver for echo sounding small distance measurement - has semi-parabolic reflectors with excited membranes for transducers | |
| DE2649075A1 | METHOD AND ARRANGEMENT FOR MEASURING THE FILL LEVEL IN A CONTAINER AND THE SCHUETTGUTHOEHE IN A STORAGE AREA |