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Ernst Lange
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Publication of GB190014260ApublicationCriticalpatent/GB190014260A/en
14,260. Lange, E. Aug. 9. Wood-screws, making. The teeth c on the rotary cutter a for threading wood screw blanks d are made on both sides so that, when one set becomes blunt, the other set may be used.
GB190014260D1900-08-091900-08-09Improvements in Cutters for Worming Wood Screws.
ExpiredGB190014260A
(en)