| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Canada | 7 | |
| #2 | United States | 6 | |
| #3 | Germany | 1 |
| # | Industry | |
|---|---|---|
| #1 | Machine tools | |
| #2 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Veneer production | |
| #2 | Shafts |
| # | Name | Total Patents |
|---|---|---|
| #1 | Ottersland Peter N | 14 |
| Publication | Filing date | Title |
|---|---|---|
| US2770270A | Supports for rotating drums | |
| US2585673A | Disk chipper with horizontally inclined rotary axes | |
| US2570845A | Rotary chipper-knife mounting | |
| US2337407A | Knife mounting | |
| US2299248A | Log chipper | |
| US2247665A | Chipper | |
| CA487533A | Knife mountings | |
| CA415265A | Log chipper | |
| CA568388A | Supports for rotating barking drums | |
| CA395958A | Wood chipper | |
| CA486016A | Chippers | |
| CA432765A | Knife mounting | |
| CA397060A | Log barking drum |