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公开(公告)号:US1380991A
公开(公告)日:1921-06-07
申请号:US22800218
申请日:1918-04-11
Applicant: LONSWAY JOHN J
Inventor: LONSWAY JOHN J
IPC: E01B31/06
CPC classification number: E01B31/06 , Y10T408/375 , Y10T408/5565
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公开(公告)号:US1145906A
公开(公告)日:1915-07-13
申请号:US1914865178
申请日:1914-10-05
Applicant: LONSWAY JOHN J
Inventor: LONSWAY JOHN J
CPC classification number: B23B41/12 , Y10T408/375 , Y10T408/3806 , Y10T408/55 , Y10T408/556
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公开(公告)号:US1014497A
公开(公告)日:1912-01-09
申请号:US1910542857
申请日:1910-02-09
Applicant: LONSWAY JOHN J
Inventor: LONSWAY JOHN J
CPC classification number: A01D45/021
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