| 5047722 |
Apparatus for measuring internal resistance of wet cell storage batteries having non-removable cell caps |
John W. Wurst, Allan M. Dob |
1991-09-10 |
| 4957828 |
Emergency battery monitor |
— |
1990-09-18 |
| 4825789 |
Low bobbin thread detector |
John N. Wurst |
1989-05-02 |
| 4763589 |
Solar powered indicating device for sewing machines |
Manfred R. Laidig |
1988-08-16 |
| 4712496 |
Machine stitched buttonhole and method of producing same |
John Brown, John W. Wurst |
1987-12-15 |
| 4373459 |
Electronically controlled sewing machine arranged to sew a sequence of stitch patterns |
William H. Dunn, Leonard I. Horey, John W. Wurst |
1983-02-15 |
| 4232617 |
One-step buttonholer with hall effect sensor |
— |
1980-11-11 |
| 4214543 |
Electronically controlled top feed arrangement for a sewing machine |
Robert Sedlatschek, John J. Sudano |
1980-07-29 |
| 4188900 |
Method of buttonhole formation |
Charles R. Odermann |
1980-02-19 |