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| Patents Granted on 1959-04-28 | |||||
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| Number | Date | Patentee | Title | Type | |
| 2,883,737 | Apr. 28, 1959 | J.H. Wilson | Clamp-On Tool Bit | insert tool holders | |
| 2,883,745 | Apr. 28, 1959 | H. Bristol | Can Opener | can and jar openers | |
| 2,883,758 | Apr. 28, 1959 | C. Zelnick | Apparatus for measuring the size and symmetry of an opening formed in a work piece | ||
| 2,883,803 | Apr. 28, 1959 | C. Stead | Lapping Surface Conditioning Means | lapping machines | |
| 2,884,228 | Apr. 28, 1959 | R. Jorgensen | Air conditioning units | air conditioning apparatus | |