| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 4 | |
| #2 | EPO (European Patent Office) | 3 | |
| #3 | Canada | 2 | |
| #4 | Denmark | 2 | |
| #5 | Spain | 1 | |
| #6 | Ireland | 1 |
| # | Industry | |
|---|---|---|
| #1 | Machine tools | |
| #2 | Machines | |
| #3 | Mechanical elements | |
| #4 | Environmental technology |
| # | Technology | |
|---|---|---|
| #1 | Making metal sheets | |
| #2 | Pipes | |
| #3 | Unspecified technologies | |
| #4 | Gas-flow silencers for machines | |
| #5 | Unspecified technologies |
| # | Name | Total Patents |
|---|---|---|
| #1 | Schafer Gunter | 10 |
| #2 | Schafer Guenter | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US4622838A | Apparatus for manufacturing flexible corrugated tubes | |
| US4509560A | Locking detent for corrugated tube | |
| IE832189L | Flexible strip for forming tubes | |
| CA1231006A | Apparatus for manufacturing flexible corrugated tubes | |
| US4489463A | Pipe clamp | |
| US4486484A | Strip of flexible corrugated material |