| 4950345 |
Method and apparatus for making improved seals between polymeric film materials |
Jerry Mike Reaves, Fredrick J. Priggs |
1990-08-21 |
| 4919740 |
Method and apparatus for forming fin-type back seals |
— |
1990-04-24 |
| 4726171 |
Method and apparatus for applying article to inside of bag |
Stephen R. Holten, Stephen Michael Callahan, Kenneth R. Berger |
1988-02-23 |
| 4555289 |
Method and apparatus forming fin-type back seal using cohesive sealants without externally applied heat |
— |
1985-11-26 |
| 4534818 |
Method and apparatus for ultrasonic sealing |
Kenneth R. Berger |
1985-08-13 |
| 4517790 |
Apparatus and method for ultrasonic sealing of packages |
— |
1985-05-21 |
| 4517787 |
Method and apparatus for sealing bags |
— |
1985-05-21 |
| 4455810 |
Method and apparatus for detecting possibly defectively-sealed bags |
Stanley I. Mason, Jr., Larry Wendell Wilson |
1984-06-26 |
| 4373982 |
Ultrasonic sealing apparatus |
Stanley I. Mason, Jr. |
1983-02-15 |