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| Patents for Henry M. Hendrickson | |||||
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| Picture | Number | Date | Patentee | Title | |
| 2,204,359 | Jun. 11, 1940 | H.M. Hendrickson | Door Latch or Catch for Cameras and Other Structures | ||
| 2,236,904 | Apr. 01, 1941 | H.M. Hendrickson | Surface Ornamentation | ||