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公开(公告)号:US2030098A
公开(公告)日:1936-02-11
申请号:US28867628
申请日:1928-06-27
Applicant: CASE RES LAB INC
Inventor: WILLARD CASE THEODORE
IPC: G11B23/20
CPC classification number: G11B23/20
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公开(公告)号:US1970223A
公开(公告)日:1934-08-14
申请号:US37444129
申请日:1929-06-28
Applicant: CASE RES LAB INC
Inventor: WILLARD CASE THEODORE
IPC: H01J17/00
CPC classification number: H01J17/00 , H01J2893/0064
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公开(公告)号:US1872675A
公开(公告)日:1932-08-23
申请号:US27580528
申请日:1928-05-07
Applicant: CASE RES LAB INC
Inventor: WILLARD CASE THEODORE
IPC: G02F1/07
CPC classification number: G02F1/07
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公开(公告)号:US1774253A
公开(公告)日:1930-08-26
申请号:US5091525
申请日:1925-08-18
Applicant: CASE RES LAB INC
Inventor: WILLARD CASE THEODORE
IPC: G03B31/00
CPC classification number: G03B31/00
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公开(公告)号:US1753002A
公开(公告)日:1930-04-01
申请号:US73356024
申请日:1924-08-22
Applicant: CASE RES LAB INC
Inventor: WILLARD CASE THEODORE
IPC: G03B31/00
CPC classification number: G03B31/00
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公开(公告)号:US1747287A
公开(公告)日:1930-02-18
申请号:US23453527
申请日:1927-11-19
Applicant: CASE RES LAB INC
Inventor: WILLARD CASE THEODORE
IPC: H01J61/12
CPC classification number: H01J61/12
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公开(公告)号:US1638472A
公开(公告)日:1927-08-09
申请号:US72794924
申请日:1924-07-24
Applicant: CASE RES LAB INC
Inventor: WILLARD CASE THEODORE
IPC: H04L25/26
CPC classification number: H04L25/26
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公开(公告)号:US1638392A
公开(公告)日:1927-08-09
申请号:US9559326
申请日:1926-03-18
Applicant: CASE RES LAB INC
Inventor: WILLARD CASE THEODORE
IPC: G03B1/48
CPC classification number: G03B1/48
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公开(公告)号:US1605528A
公开(公告)日:1926-11-02
申请号:US2862025
申请日:1925-05-07
Applicant: CASE RES LAB INC
Inventor: WILLARD CASE THEODORE
IPC: H04L27/02
CPC classification number: H04L27/02
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公开(公告)号:US1816825A
公开(公告)日:1931-08-04
申请号:US19512927
申请日:1927-05-28
Applicant: CASE RES LAB INC
Inventor: WILLARD CASE THEODORE
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