| # | Industry | |
|---|---|---|
| #1 | Mechanical elements | |
| #2 | Transport | |
| #3 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | Pipes | |
| #2 | Venting or aerating devices | |
| #3 | Installations for obtaining water | |
| #4 | Vehicle parts | |
| #5 | Springs |
| # | Name | Total Patents |
|---|---|---|
| #1 | Berghoefer Hans Dipl Kfm | 11 |
| #2 | Berghoefer Hans Dipl-Kfm | 5 |
| Publication | Filing date | Title |
|---|---|---|
| DE3442127A1 | Elastic pipe connecting piece | |
| DE2922358A1 | Telescopic bumper bar shock absorber - has increasing size annular pistons acting as cylinders for next smaller pistons | |
| DE2714963A1 | ELASTIC TUBE CONNECTOR | |
| DE2638622A1 | Flexible pipe coupling with flange connection - has expansion corrugation with flange beads clamped on pipe flanges to increase sealing at high pressures | |
| DE2531349A1 | Elastic sealing joint for tubes - has cylindrical sleeve trapped at each end between tube flange and clamping ring | |
| DE1945008A1 | Flexible plastics lined gas hoses |