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PCT No. PCT/GB87/00186 Sec. 371 Date Nov. 18, 1987 Sec. 102(e) Date Nov. 18, 1987 PCT Filed Mar. 17, 1987 PCT Pub. No. WO87/05485 PCT Pub. Date Sep. 24, 1987.A knife, such as a surgical scalpel or a handymans knife has a protective blade...
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