| # | Industry | |
|---|---|---|
| #1 | Packaging and shipping | |
| #2 | Textiles and paper | |
| #3 | Thermal processes | |
| #4 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | Handling thin material | |
| #2 | Casings for combustion chambers | |
| #3 | Knitting | |
| #4 | General building constructions |
| # | Name | Total Patents |
|---|---|---|
| #1 | Zollinger Otto | 9 |
| #2 | Otto Zollinger | 2 |
| Publication | Filing date | Title |
|---|---|---|
| US5318233A | Ball tension device | |
| CA1031748A | Yarn tension device | |
| CA1038359A | Yarn tension device | |
| US4005833A | Yarn tensioning device | |
| BE808241A | Yarn tensioning device - comprises a sphere which traps a yarn against a seat in a passage as the yarn passes through the passage |