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公开(公告)号：US1371372A
公开(公告)日：1921-03-15
申请号：US23540418
申请日：1918-05-18
Applicant: EASTERN MFG COMPANY
Inventor： HOWE HENRY P
IPC: D21G1/00
CPC classification number: D21G1/00
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公开(公告)号：US1394016A
公开(公告)日：1921-10-18
申请号：US23540518
申请日：1918-05-18
Applicant: EASTERN MFG COMPANY
Inventor： HOWE HENRY P
IPC: D21G1/00
CPC classification number: D21G1/00
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公开(公告)号：US1278659A
公开(公告)日：1918-09-10
申请号：US21517518
申请日：1918-02-02
Applicant: EASTERN MFG COMPANY
Inventor： HOWE HENRY P
CPC classification number: B31F1/07 , Y10S271/90
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