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| All Patents in class 156/366 | |||||
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| Number | Date | Patentee | Title | Type | |
| 2,321,174 | Jun. 08, 1943 | O. Bergstrom | Means of fabricating wall sections and the like | ||
| 2,326,436 | Aug. 10, 1943 | H.F. Caldwell | Label attaching machine | ||