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| Patents for F. & A. Parkinson Ltd. | |||||
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| Number | Date | Patentee | Title | Type | |
| GB-142,022 | Apr. 29, 1920 | A. Parkinson | Improvements in or relating to electric terminal plates, terminal sockets and the like | electric motors | |
| GB-154,507 | Dec. 02, 1920 | A. Parkinson | Improvements in or relating to brush lifting and short circuiting means for induction motors | induction motors | |