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公开(公告)号：US1446305A
公开(公告)日：1923-02-20
申请号：US46935421
申请日：1921-05-13
Applicant: SACO LOWELL SHOPS
Inventor： WARREN HOWE CHARLES
IPC: B23B31/30
CPC classification number: B23B31/30 , Y10T82/2514 , Y10T279/17965 , Y10T279/3481
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公开(公告)号：US1549309A
公开(公告)日：1925-08-11
申请号：US63222623
申请日：1923-04-16
Applicant: SACO LOWELL SHOPS
Inventor： WARREN HOWE CHARLES , HAROLD HOEBER
IPC: B23D37/00
CPC classification number: B23D37/00 , Y10T29/49996 , Y10T409/501804
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公开(公告)号：US1908294A
公开(公告)日：1933-05-09
申请号：US42557030
申请日：1930-02-03
Applicant: SACO LOWELL SHOPS
Inventor： WARREN HOWE CHARLES
IPC: D01G9/00
CPC classification number: D01G9/00
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