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Patents for Herbert J. Heller | |||||
Number | Date | Patentee | Title | Type | |
1,775,787 | Sep. 16, 1930 | U.F. Steindorff, H.J. Heller | Power-driven shears | metal shearing machines | |
1,796,812 | Mar. 17, 1931 | U.F. Steindorff, H.J. Heller | Shears | metal shearing machines | |
1,857,167 | May 10, 1932 | U.F. Steindorff, H.J. Heller, G.A. Ungar | Power-driven shears for cutting sheet material such as metal, leather, cardboard or the like | metal shearing machines |