| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Australia | 4 | |
| #2 | United Kingdom | 3 | |
| #3 | Italy | 2 | |
| #4 | United States | 2 | |
| #5 | Brazil | 1 | |
| #6 | Sweden | 1 | |
| #7 | South Africa | 1 |
| # | Industry | |
|---|---|---|
| #1 | Machines | |
| #2 | Mechanical elements | |
| #3 | Machine tools | |
| #4 | Consumer goods | |
| #5 | Transport |
| # | Technology | |
|---|---|---|
| #1 | Nails | |
| #2 | Unspecified technologies | |
| #3 | Accessories for machine tools | |
| #4 | Goods for writing upon | |
| #5 | Hand carts |
| # | Name | Total Patents |
|---|---|---|
| #1 | Okada J | 5 |
| #2 | Okada Jujiro | 4 |
| #3 | Satoo Isamu | 3 |
| #4 | Satoo I | 2 |
| Publication | Filing date | Title |
|---|---|---|
| GB1443764A | Method of procucing a product having an oval periphery by a cutting process | |
| AU6299573A | a METHOD TO PRODUCE AN OVAL PRODUCT HAVING OVAL CIRCUMFERENCE BY CUTTING PROCESS | |
| AU6045873A | Equipment to produce an oval product with oval circumference by cutting process | |
| GB1446924A | Apparatus to draw an oval | |
| US3730048A | Screw with a head looking like a true circle |