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| Patents for C. Jackson & Son Ltd. | |||||
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| Number | Date | Patentee | Title | Type | |
| GB-223,654 | Oct. 27, 1924 | A. Cleaver | mprovements in adjustable spanners, wrenches, pipe grips and pipe cutters | screw adjust wrenches | |
| GB-292,030 | Jun. 14, 1928 | A. Cleaver | Improvements in adjustable spanners, wrenches, pipe grips and pipe cutters | screw adjust wrenches | |