|
US4897077A
|
Method of inserting an IAB device into the body |
Expired / Lapsed
|
1988-11-23 |
1990-01-30 |
24 |
Details
|
|
US4242912A
|
Method and apparatus for producing cross-sectional images u… |
Expired / Lapsed
|
1979-02-09 |
1981-01-06 |
38 |
Details
|
|
US3974475A
|
Method of and apparatus for focusing ultrasonic waves in a … |
Expired / Lapsed
|
1974-08-28 |
1976-08-10 |
6 |
Details
|