Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4307281 | Method of arc welding | Alfred V. Ivannikov, Nikolai A. Eroshkin, deceased, by Valeriya I. Eroshkina, administrator, by Andrei N. Eroshkin, administrator, by Mariya I. Eroshkina, administrator | 1981-12-22 |
| 4187410 | Method of multi-pass narrow groove arc welding | Nikolai A. Eroshkin, deceased, Alfred V. Ivannikov, Anatoly Sergienko | 1980-02-05 |