| Patents for E. F. Hager & Son |
Patents 1 -
8
of 8
      |
| Number | Date | Patentee | Title | Type |
| 1,729,828 | Oct. 01, 1929 | E.F. Hager | Display device | |
| 1,948,109 | Feb. 20, 1934 | E.F. Hager | Cutting device | handheld power reciprocating saws |
| 2,128,409 | Aug. 30, 1938 | E.F. Hager | Scope stand | armaments |
| 2,230,222 | Feb. 04, 1941 | E.F. Hager | Method of and apparatus for tuning reeds of musical instruments | music instrument maker |
| 2,450,135 | Sep. 28, 1948 | E.F. Hager | Work support arrangement for grinding and dressing machines | tool grinders |
| 2,453,573 | Nov. 09, 1948 | E.F. Hager | Grinder machine | tool grinders |
| 2,455,577 | Dec. 07, 1948 | E.F. Hager | Center punch | center punches |
| 2,486,645 | Nov. 01, 1949 | E.F. Hager | Toolmaker's optical instrument having mounting features and scale graduations | optical measuring gauges |
