| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Denmark | 5 | |
| #2 | United Kingdom | 4 | |
| #3 | France | 2 | |
| #4 | Germany | 1 | |
| #5 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Audio-visual technology | |
| #2 | Consumer goods | |
| #3 | Measurement | |
| #4 | Medical technology |
| # | Technology | |
|---|---|---|
| #1 | Sound-producing devices | |
| #2 | Loudspeakers and microphones | |
| #3 | Special information storage | |
| #4 | Diagnosis and surgery | |
| #5 | Geophysics |
| # | Name | Total Patents |
|---|---|---|
| #1 | Rorbaek Madsen E | 1 |
| #2 | Rorbaek-Madsen Erik Markvard C | 1 |
| #3 | Rphirbaek Ma Erik Markvard Chr | 1 |
| #4 | Rorbek-Madsen E M C | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB994400A | Apparatus for detecting and localizing extraneous objects of electrically conductingor magnetically permeable material in human or animal tissue | |
| DE1203830B | Circuit arrangement for preventing the tendency of amplifiers to oscillate, in which the signal to be amplified is to be supplied with a phase-shifted signal derived from it, e.g. B. of reverberation amplifiers | |
| GB1006902A | Reverberatory amplifiers | |
| GB930366A | Stereophonic pick-up having a single stylus |