| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 12 |
| # | Industry | |
|---|---|---|
| #1 | Optics | |
| #2 | Electrical machinery and energy | |
| #3 | Medical technology | |
| #4 | Machine tools | |
| #5 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Spectacles | |
| #2 | Diagnosis and surgery | |
| #3 | Electrically-conductive connections | |
| #4 | Grinding or polishing devices | |
| #5 | Resistors | |
| #6 | Manufacturing processes |
| # | Name | Total Patents |
|---|---|---|
| #1 | Meyrowitz Emil B | 4 |
| #2 | Buchhop Ferdinand | 2 |
| #3 | Meyrowitz Oscar W | 1 |
| #4 | Bolde Henry | 1 |
| #5 | Kestner Charles D | 1 |
| #6 | Herold Harry G | 1 |
| #7 | Higgins Frederick L | 1 |
| #8 | Schmidt Henry | 1 |
| #9 | Cohen Ira R | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US1096169A | Trial-frame for optical testing purposes. | |
| US1082491A | Trifocal lens. | |
| US1032814A | Guard for eyeglass-mountings. | |
| US1029367A | Lens-cutting machine. | |
| US1006825A | Ophthalmometer. | |
| US968699A | Method of grinding lenses. | |
| US981572A | Rheostat. | |
| US943836A | Eyeglasses. | |
| US946973A | Eyeglasses. | |
| US809001A | Eyeglasses. | |
| US699205A | Electrical tap-socket. | |
| US683965A | Refractometer. |