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| Patents for P. E. Chapman Electrical Works, Inc. | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,924,913 | Aug. 29, 1933 | P.E. Chapman, C.L. Chittenden | Growler type testing device | electrical devices | |
| 2,622,128 | Dec. 16, 1952 | P.E. Chapman | Growler type testing device | electrical devices | |