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公开(公告)号:US1882757A
公开(公告)日:1932-10-18
申请号:US32360428
申请日:1928-12-04
Applicant: WESTERN ELECTRIC CO
Inventor: EDSON BOYNTON JOHN
IPC: B21C23/30
CPC classification number: B21C23/30
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公开(公告)号:US1741815A
公开(公告)日:1929-12-31
申请号:US19539627
申请日:1927-05-31
Applicant: WESTERN ELECTRIC CO
Inventor: EDSON BOYNTON JOHN
IPC: B21C29/00
CPC classification number: B21C29/00
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公开(公告)号:US1741813A
公开(公告)日:1929-12-31
申请号:US1813325
申请日:1925-03-25
Applicant: WESTERN ELECTRIC CO
Inventor: EDSON BOYNTON JOHN
IPC: B21C23/30
CPC classification number: B21C23/30
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公开(公告)号:US1789457A
公开(公告)日:1931-01-20
申请号:US36720429
申请日:1929-05-31
Applicant: WESTERN ELECTRIC CO
Inventor: EDSON BOYNTON JOHN
IPC: B21C23/30
CPC classification number: B21C23/30
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公开(公告)号:US1720759A
公开(公告)日:1929-07-16
申请号:US71176324
申请日:1924-05-08
Applicant: WESTERN ELECTRIC CO
Inventor: EDSON BOYNTON JOHN
IPC: B21C23/30
CPC classification number: B21C23/30
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公开(公告)号:US1831992A
公开(公告)日:1931-11-17
申请号:US28032828
申请日:1928-05-24
Applicant: WESTERN ELECTRIC CO
Inventor: EDSON BOYNTON JOHN
IPC: H01B13/26
CPC classification number: H01B13/26 , Y10T29/5122 , Y10T29/5176 , Y10T29/53126
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公开(公告)号:US1741814A
公开(公告)日:1929-12-31
申请号:US7695425
申请日:1925-12-22
Applicant: WESTERN ELECTRIC CO
Inventor: EDSON BOYNTON JOHN
IPC: B21C29/04
CPC classification number: B21C29/04
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公开(公告)号:US1831945A
公开(公告)日:1931-11-17
申请号:US28032928
申请日:1928-05-24
Applicant: WESTERN ELECTRIC CO
Inventor: EDSON BOYNTON JOHN
IPC: B21C37/12
CPC classification number: B21C37/12 , Y10T29/5176 , Y10T29/5185 , Y10T29/53126
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公开(公告)号:US1741816A
公开(公告)日:1929-12-31
申请号:US28417828
申请日:1928-06-09
Applicant: WESTERN ELECTRIC CO
Inventor: EDSON BOYNTON JOHN
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公开(公告)号:US1741812A
公开(公告)日:1929-12-31
申请号:US71981724
申请日:1924-06-13
Applicant: WESTERN ELECTRIC CO
Inventor: EDSON BOYNTON JOHN
IPC: B21C37/12
CPC classification number: B21C37/12 , Y10T29/49881 , Y10T29/5103 , Y10T29/53126
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