| Patent number | INVENTORS NAMES | Assignees | Title | Place |
Date |
| 200,441 | Dormitzer, Anna |
| Improvement in window cleaning chairs |
New York, NY | Feb. 19, 1878 | | | 206,935 | Dormitzer, Anna |
| Improvement in window cleaning step chairs |
New York, NY | Aug. 13, 1878 | | | 206,936 | Dormitzer, Anna |
| Improvement in window cleaning step chairs |
New York, NY | Aug. 13, 1878 | | | 219,234 | Dormitzer, Anna |
| Improvement in window cleaning chairs |
New York, NY | Sep. 2, 1879 | | | 244,203 | Dormitzer, Anna |
| Window cleaning chair |
New York, NY | Jul. 12, 1881 | | | 256,654 | Dormitzer, Anna |
| Combined window cleaning chair and fire escape |
New York, NY | Apr. 18, 1882 | | | 293,428 | Dormitzer, Anna |
| Window cleaning chair |
New York, NY | Feb. 12, 1884 | | | 335,215 | Dormitzer, Anna |
| Window cleaning chair |
New York, NY | Feb. 2, 1886 | | | 336,219 | Dormitzer, Anna |
| Ornamental step ladder |
New York, NY | Feb. 16, 1886 | | | 342,431 | Dormitzer, Anna |
| Paint and brush bucket |
New York, NY | May 25, 1886 | | | 361,212 | Dormitzer, Anna |
| Ornamental step ladder |
New York, NY | Apr. 12, 1887 | | | 421,914 | Dormitzer, Anna |
| Step ladder |
New York, NY | Feb. 25, 1890 | | | 449,846 | Dormitzer, Anna |
| Step ladder |
New York, NY | Apr. 7, 1891 | | | 488,990 | Dormitzer, Anna |
| Ornamental step ladder |
New York, NY | Jan. 3, 1893 | | | 498,464 | Dormitzer, Anna |
| Chair for washing windows |
New York, NY | May 30, 1893 | |
|
Susan E. Hocker, Miami University Libraries.12/12/03
