Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4818148 | Frost damage proofed pile | Takashi Takeda, Katsumi Omori, Toshiyuki Ohkuma, Shigeru Nakagawa, Tetsuzo Hirose | 1989-04-04 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4818148 | Frost damage proofed pile | Takashi Takeda, Katsumi Omori, Toshiyuki Ohkuma, Shigeru Nakagawa, Tetsuzo Hirose | 1989-04-04 |