| Patent number | INVENTORS NAMES | Assignees | Title | Place |
Date |
| 141,987 | Blanchard, Helen A. |
| Improvement in sewing machines |
Boston, MA | Aug. 19, 1873 | | | 152,721 | Blanchard, Helen A. |
| Improvement in sewing machines |
Boston, MA | July 7, 1874 | | | 161,471 | Blanchard, Helen A. |
| Improvement in sewing machines |
Boston, MA | Mar. 30, 1875 | | | 161,472 | Blanchard, Helen A. |
| Improvement in sewing machines |
Boston, MA | Mar. 30, 1875 | | | 162,019 | Blanchard, Helen A. |
| Improvement in elastic seams for garments |
Boston, MA | Apr. 13, 1875 | | | 167,492 | Blanchard, Helen A. |
Bigelow, John; trustee | Improvement in methods of uniting knit goods, & c |
Boston, MA | Sept. 7, 1875 | | | 167,732 | Blanchard, Helen A. |
| Improvement in elastic gorings for shoes |
Boston, MA | Sept. 14, 1875 | | | 174,764 | Blanchard, Helen A. |
| Improvement in welted and covered seams |
Boston, MA | Mar. 14, 1876 | | | 193,216 | Blanchard, Helen A. |
Bigelow, John trustee | Improvement in crochet attachments for sewing machines |
Boston, MA | July 17, 1877 | | | 276,344 | Blanchard, Helen A. |
| Spool case |
Philadelphia, PA | Apr. 24, 1883 | | | 304,900 | Blanchard, Helen A. |
| Pencil sharpener |
Boston, MA | Sept. 9, 1884 | | | 394,817 | Blanchard, Helen A. |
| Corset cord fastener |
Philadelphia, PA | Dec. 18, 1888 | | | 496,929 | Blanchard, Helen A. |
| Securing reeds or cords to the edges of materials |
New York, NY | May 9, 1893 | | | 500,556 | Blanchard, Helen A. |
| Sewing needle |
New York, NY | July 4, 1893 | | | 527,263 | Blanchard, Helen A. |
| Surgical needle |
New York, NY | Oct. 9, 1894 | | | 252,992 | Blanchard, Helen A. |
| Sewing machine needle |
Philadelphia, PA | Jan. 31, 1882 | |
|
Susan E. Hocker, Miami University Libraries.12/12/03
