| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 12 | |
| #2 | Canada | 2 |
| # | Industry | |
|---|---|---|
| #1 | Measurement | |
| #2 | Packaging and shipping | |
| #3 | Machines | |
| #4 | Agriculture | |
| #5 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Weighing | |
| #2 | Packaging | |
| #3 | Horticulture | |
| #4 | Unspecified technologies | |
| #5 | Gearing |
| # | Name | Total Patents |
|---|---|---|
| #1 | Vredenburg Edric W | 12 |
| #2 | Vredenburg Edric W Sr | 2 |
| Publication | Filing date | Title |
|---|---|---|
| CA1136858A | Self-cleaning tree girdling device | |
| CA1100759A | Tree girdling device | |
| US2879970A | Weighing mechanism | |
| US2602626A | Bag filling and weighing device | |
| US2436983A | Device for simultaneously filling and weighing bags | |
| US2458229A | Variable-speed drive | |
| US2458228A | Weighing device with bag filling and bag vibrating means | |
| US2392204A | Bag filling device | |
| US2402217A | Net and gross weigher | |
| US2366163A | Eilling srout | |
| US2346882A | Net and gross weigher | |
| US2288379A | Weighing mechanism feeder | |
| US2314299A | Weighing mechanism | |
| US2112977A | Automatic weighing scale |