| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 3 | |
| #2 | Canada | 2 | |
| #3 | Germany | 2 | |
| #4 | France | 2 | |
| #5 | United Kingdom | 2 | |
| #6 | Italy | 1 |
| # | Industry | |
|---|---|---|
| #1 | Packaging and shipping | |
| #2 | Machine tools | |
| #3 | Machines | |
| #4 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Handling thin material | |
| #2 | Turning | |
| #3 | Clutches and brakes | |
| #4 | Unspecified technologies |
| # | Name | Total Patents |
|---|---|---|
| #1 | Mengel William R | 4 |
| #2 | Mengel William Rudolph | 3 |
| Publication | Filing date | Title |
|---|---|---|
| US4165842A | Apparatus for replacing rotating mandrels on which a web is wound | |
| US4204650A | Apparatus for replacing rotating mandrels on which a web is wound | |
| US4111569A | Shell and shaft subassembly |