| 1921 SINGER Thread Severing Mechanism Sewing Machines |
| 1921 WOHLPART Feeding Mechanism Sewing Machines |
| 1921 MOFFATT Stitch Forming Mechanism Sewing Machines |
| 1921 GATCHELL Trimming Mechanism Sewing Machines |
| 1921 UNION Feeding Mechanism Sewing Machines Art |
| 1921 GEORGE Driving Mechanism Sewing Machines Like |
| 1921 SEYMOUR Trimming Mechanism Sewing Machines |
| 1921 HERBERT Shuttle Driving Mechanism Sewing Machines |
| 1921 DOMESTIC Driving Mechanism Sewing Machines |
| 1921 DE Trimming Mechanism Sewing Machines Art |
| 1921 KELSO Hook Needle Mechanism Sewing Machines |
| 1921 UNION Thread Controlling Mechanism Sewing Machines |
| 1921 SINGER Shuttle Driving Mechanism Sewing Machines |
| 1921 JOHN Guard Starting Mechanism Sewing Machines |
| 1921 GEORGE Stitch Forming Mechanism Sewing Machines |
| 1921 ARBETTER Feeding Mechanism Sewing Machines |
| 1921 ALLEN Work Clamping Mechanism Sewing Machines |
| 1921 SINGER CO Work Clamping Mechanism Sewing Machines |
| 1921 DE Thread Severing Mechanism Sewing Machines |
| 1921 SINGER CO Trimming Mechanism Sewing Machines |
| 1921 MACE Driving Mechanism Sewing Machines Art |
| 1921 DE Feeding Mechanism Sewing Machines Art |
| 1921 ALEXANDER Bobbin Winding Mechanism Sewing Machines |
| 1921 HAYES Feeding Mechanism Sewing Machines Art |
| 1921 SINGER CO Stitch Forming Mechanism Sewing Machines |
| 1921 UNION Looper Supporting Mechanism Sewing Machines |
| 1921 UNION Hook Needle Mechanism Sewing Machines |
| 1921 THOMAS Work Feed Mechanism Sewing Machines |
| 1921 BEDWARD Driving Mechanism Sewing Machines Like |
| 1921 ALEXANDER Stitch Forming Mechanism Sewing Machines |
| 1921 ALEXANDER Feeding Mechanism Sewing Machines |
| 1921 GATCHELL Stitch Forming Mechanism Sewing Machines |
| 1921 UNION Trimming Mechanism Sewing Machines |
| 1921 REECE Guard Starting Mechanism Sewing Machines |
| 1921 SINGER CO Feeding Mechanism Sewing Machines |
| 1921 UNION Stitch Forming Mechanism Sewing Machines |