Harry E. Dykeman, "Rug Tufting Machine" (US1831485A)
Patent · not yet checked at the source
- Made by
- Harry E. Dykeman
- Date
- filed 30 Nov 1928, granted 10 Nov 1931
- Place
- Chicago, Illinois
- Held by
- Union Special Machine Co. (assignee)
- Number
- US1831485A
- Themes
- Machine tufting & Dalton, Tools & equipment
Cite this source
Harry E. Dykeman, “Rug Tufting Machine” (US1831485A), filed 30 Nov 1928, granted 10 Nov 1931; assigned to Union Special Machine Co. patents.google.com/patent/US1831485A/en.
Research notes
A sewing-machine maker's rug tufting machine. Patent research (Oct 2026): number, title, names and dates read from the USPTO scan.