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公开(公告)号:US1896682A
公开(公告)日:1933-02-07
申请号:US12472426
申请日:1926-07-24
Applicant: CASE RES LAB INC
Inventor: WILLARD CASE THEODORE
IPC: G03B31/04
CPC classification number: G03B31/04
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公开(公告)号:US1872404A
公开(公告)日:1932-08-16
申请号:US17291227
申请日:1927-03-04
Applicant: CASE RES LAB INC
Inventor: WILLARD CASE THEODORE
IPC: G03B9/08
CPC classification number: G03B9/08
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公开(公告)号:US1865055A
公开(公告)日:1932-06-28
申请号:US32610828
申请日:1928-12-14
Applicant: CASE RES LAB INC
Inventor: WILLARD CASE THEODORE
IPC: G03B31/02
CPC classification number: G03B31/02
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公开(公告)号:US1781945A
公开(公告)日:1930-11-18
申请号:US26161128
申请日:1928-03-14
Applicant: CASE RES LAB INC
Inventor: WILLARD CASE THEODORE
IPC: G03B31/02
CPC classification number: G03B31/02
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公开(公告)号:US1647503A
公开(公告)日:1927-11-01
申请号:US69841624
申请日:1924-03-11
Applicant: CASE RES LAB INC
Inventor: WILLARD CASE THEODORE
IPC: H03F3/02
CPC classification number: H03F3/02
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公开(公告)号:US1638393A
公开(公告)日:1927-08-09
申请号:US12472326
申请日:1926-07-24
Applicant: CASE RES LAB INC
Inventor: WILLARD CASE THEODORE
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公开(公告)号:US1605530A
公开(公告)日:1926-11-02
申请号:US3420725
申请日:1925-06-01
Applicant: CASE RES LAB INC
Inventor: WILLARD CASE THEODORE
CPC classification number: B29C44/18 , Y10T29/49885
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公开(公告)号:US1605527A
公开(公告)日:1926-11-02
申请号:US73099424
申请日:1924-08-08
Applicant: CASE RES LAB INC
Inventor: WILLARD CASE THEODORE
IPC: G11B7/00
CPC classification number: G11B7/00
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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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公开(公告)号:US1788355A
公开(公告)日:1931-01-06
申请号:US29486628
申请日:1928-07-23
Applicant: CASE RES LAB INC
Inventor: WILLARD CASE THEODORE
IPC: H01J17/06
CPC classification number: H01J17/066 , H01J2893/0066
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