| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 11 | |
| #2 | Canada | 10 |
| # | Industry | |
|---|---|---|
| #1 | Chemical engineering | |
| #2 | Machines | |
| #3 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Unspecified technologies | |
| #2 | Separating solids | |
| #3 | Shafts |
| # | Name | Total Patents |
|---|---|---|
| #1 | Parks Walter J | 21 |
| Publication | Filing date | Title |
|---|---|---|
| US2667689A | Method of making bearing mountings | |
| US2532327A | Bearing | |
| US2532779A | Mounting structure for bearings | |
| US2355891A | Screening apparatus | |
| US2313765A | Gyratory screen | |
| US2311279A | Screening apparatus | |
| US2264769A | Gyratory screen | |
| US2208596A | Reciprocating screen | |
| US2222299A | Reciprocating screen | |
| US2188482A | Reciprocating mechanism | |
| US2066362A | Screening apparatus and the like | |
| CA516401A | Bearing | |
| CA430361A | Gyratory screen | |
| CA397762A | Reciprocating mechanism | |
| CA397763A | Reciprocating screen | |
| CA483337A | Mounting structure for bearings | |
| CA405424A | Reciprocating screen | |
| CA436711A | Screening apparatus | |
| CA461833A | Screening apparatus | |
| CA430738A | Gyratory screen |