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公开(公告)号:US3597948A
公开(公告)日:1971-08-10
申请号:US3597948D
申请日:1969-01-14
Applicant: GEN MOTORS CORP
Inventor: JOHNSTONE THEODORE H
CPC classification number: E05B29/00 , E05B29/0066 , Y10T70/7616 , Y10T70/7864 , Y10T70/8595
Abstract: A core of a conventional tumbler-type lock cylinder assembly includes an additional rib which receives only an additional groove in the free end of the bitted portion of the key to increase the number of usable lock combinations.
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公开(公告)号:US3367156A
公开(公告)日:1968-02-06
申请号:US55297466
申请日:1966-05-25
Applicant: GEN MOTORS CORP
Inventor: JOHNSTONE THEODORE H
CPC classification number: E05B29/0013 , Y10T70/7633 , Y10T70/7672 , Y10T70/7695 , Y10T70/7949 , Y10T70/8649
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公开(公告)号:US3304755A
公开(公告)日:1967-02-21
申请号:US40719264
申请日:1964-10-28
Applicant: GEN MOTORS CORP
Inventor: JOHNSTONE THEODORE H
CPC classification number: E05B47/0607 , E05B47/0002 , E05B47/0004 , E05B47/0676 , E05B83/16 , E05B2047/0007 , Y10T70/7107 , Y10T70/7576 , Y10T70/7706
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公开(公告)号:US3069889A
公开(公告)日:1962-12-25
申请号:US84179259
申请日:1959-09-23
Applicant: GEN MOTORS CORP
Inventor: JOHNSTONE THEODORE H , DULLY FLOYD I , BELA SANDOR
CPC classification number: E05B85/22 , Y10S292/24 , Y10S292/25 , Y10T70/546 , Y10T70/5491 , Y10T292/0974 , Y10T292/57
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公开(公告)号:US3020075A
公开(公告)日:1962-02-06
申请号:US3478160
申请日:1960-06-08
Applicant: GEN MOTORS CORP
Inventor: JOHNSTONE THEODORE H , LIEM ROBERT C
CPC classification number: E05B85/14 , E05B85/107 , Y10S292/31 , Y10T16/458 , Y10T70/5761 , Y10T292/57
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