Abstract
Firma DONNAY, tennisracketfabrikant, US 5 211 691
| Original language | English |
|---|---|
| Publication status | Published - 1970 |
Tennis racket with inclined flat wall portions at an angle between 25° and 65°
Hugo Sol (Inventor)
Research output: Patent
Hugo Sol (Inventor)
Research output: Patent
| Original language | English |
|---|---|
| Publication status | Published - 1970 |