| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Machine tools | |
| #3 | Mechanical elements | |
| #4 | Packaging and shipping |
| # | Technology | |
|---|---|---|
| #1 | Foundations and excavations | |
| #2 | Punching metal | |
| #3 | Locks | |
| #4 | Nails | |
| #5 | Scaffolding | |
| #6 | Lifting and pushing |
| # | Name | Total Patents |
|---|---|---|
| #1 | Alfred Heichel | 2 |
| #2 | Heichel A | 1 |
| Publication | Filing date | Title |
|---|---|---|
| DE2319127A1 | DEVICE FOR TENSIONING DUCT STRUTS | |
| DE2227431A1 | LIFT TRUCK WITH HAND WINCH | |
| DE2000989A1 | Telescopic broker for rams, especially as an additional device | |
| DE1502923A1 | Hole tools for sheets and the like. | |
| DE1253999B | Hydraulic straightening press |