| # | Industry | |
|---|---|---|
| #1 | Packaging and shipping | |
| #2 | Electrical machinery and energy | |
| #3 | Furniture and games | |
| #4 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | Lifting and pushing | |
| #2 | Electrically-conductive connections | |
| #3 | Shafts | |
| #4 | Office furniture | |
| #5 | Chairs and beds |
| # | Name | Total Patents |
|---|---|---|
| #1 | Plischke Wilhelm | 6 |
| #2 | Stoerk Josef | 1 |
| #3 | Hafner Franz | 1 |
| Publication | Filing date | Title |
|---|---|---|
| DE1162531B | Jack | |
| DE1120661B | Hydraulic lifting device | |
| DE1179676B | Hydraulic lifting device with swivel lever for chairs | |
| DE957425C | Jack with ratchet mechanism |