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| Patents for William Allchin, Ltd. | |||||
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| Number | Date | Patentee | Title | Type | |
| GB-190,828,234 | Nov. 25, 1909 | S.T. Pagesmith | Improved Mechanism for Operating Change Speed Gears of Traction Engines, Heavy Motor Cars, and Other Machines | traction engine propulsion components | |
| GB-109,823 | Sep. 26, 1917 | P.W. Sirett | Detachable Wheel and Braking System for Steam-Wagons and the Like | traction engine brakes | |