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John Thomas Petford
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Individual
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Details Of Spanners, Wrenches, And Screw Drivers And Accessories
(AREA)
Abstract
18,305. P e t - ford, J. T. Aug. 6. Spanners; c o mbination tools. - A disc A with varying gaps or jaws 1 to 7 in its periphery is detachably secured to a handle B, preferably by pins D fitting into holes C, C. The handle may also have openings for nuts and may be shaped at its end as a screwdriver.
GB189718305D1897-08-061897-08-06Improvements in Spanners.
ExpiredGB189718305A
(en)