| |
 |
Martin Ellwitz Patents |
|
Inventor: Ellwitz; Martin
Address: Witten, DE
No. of patents: 1
Patents:
| Patent Number |
Title Of Patent |
Date Issued |
| 7258509 |
Diving apparatus |
August 21, 2007 |
| A diving apparatus includes a pump that is actuated by muscular force. Diving weights are fastened to a fresh-air tank by surface zip fasteners. A traction element lies between the pump and the diver's limbs and to which it is attached a quick-release device. A float is surrounded by a |
|
|
|
