CROWN OPTICAL CO has a total of 13 patent applications. Its first patent ever was published in 1909. It filed its patents most often in United States. Its main competitors in its focus markets optics are MAURICH EUGEN, SANO KIKO KK and CYCLOPTIC ANSTALT FUR OPTIK UN.
# | Country | Total Patents | |
---|---|---|---|
#1 | United States | 13 |
# | Industry | |
---|---|---|
#1 | Optics |
# | Technology | |
---|---|---|
#1 | Optical systems | |
#2 | Cameras |
# | Name | Total Patents |
---|---|---|
#1 | Stout Charles H | 3 |
#2 | Mihalyi Joseph | 3 |
#3 | Fisk Joshua T | 2 |
#4 | Mihalyi Frank | 2 |
#5 | Schleinzer John | 1 |
#6 | Zwillinger Max | 1 |
#7 | Reisinger George | 1 |
Publication | Filing date | Title |
---|---|---|
US1290279A | Binocular. | |
US1285775A | Optical instrument. | |
US1267596A | Optical instrument. | |
US1261643A | View-finder for cameras. | |
US1267592A | Optical instrument. | |
US1254741A | Optical instrument. | |
US1267572A | Optical instrument. | |
US1236895A | Lens. | |
US1229117A | Optical instrument. | |
US1249163A | Optical instrument. | |
US1226026A | Optical instrument. | |
US973021A | Photographic shutter. | |
US973020A | Photographic shutter. |