| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 2 | |
| #2 | Japan | 2 | |
| #3 | United States | 2 | |
| #4 | Canada | 1 | |
| #5 | United Kingdom | 1 | |
| #6 | Hungary | 1 | |
| #7 | Italy | 1 | |
| #8 | Norway | 1 |
| # | Industry | |
|---|---|---|
| #1 | Machines | |
| #2 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Unspecified technologies | |
| #2 | Venting or aerating devices |
| # | Name | Total Patents |
|---|---|---|
| #1 | Lanning Ii William W | 3 |
| #2 | Lanning William W | 3 |
| #3 | Lanning William W Ii | 1 |
| #4 | Guren Shii Paakusu Jiyunia | 1 |
| #5 | Uiriamu Daburiyu Ranningu Za S | 1 |
| #6 | Parks Jr Glenn C | 1 |
| #7 | Parks Jun Glenn C | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US5341835A | Lubrication system for valve seat of a gate valve | |
| US5135032A | Slurry gate valve |