Riga 1: |
Riga 1: |
| {{PatentInfo | | {{PatentInfo |
− | |Inventor=William A. Welty, Hans P. Rawn | + | |Inventor=William A. Welty, Hans P. Ravn |
− | |Assignee=William A. Welty, Hans P. Rawn | + | |Assignee=William A. Welty, Hans P. Ravn |
| |Country=US | | |Country=US |
| |ApplicationNum=224116 | | |ApplicationNum=224116 |