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Patents for Fred Ohde | |||||
Number | Date | Patentee | Title | Type | |
1,281,096 | Oct. 08, 1918 | C.F. Thullen | Level device | levels | |
CA-196,597 | Jan. 27, 1920 | C.F. Thullen | Level device | levels | |
1,393,328 | Oct. 11, 1921 | C.F. Thullen | Level device | levels | |
CA-213,997 | Oct. 25, 1921 | C.F. Thullen | Level device | levels |