-
1.发明授权
公开(公告)号：US3466442A
公开(公告)日：1969-09-09
申请号：US3466442D
申请日：1967-04-19
Applicant: JOSEPH L MCKIBBEN , GERALD G OHLSEN , RALPH R STEVENS JR
Inventor： MCKIBBEN JOSEPH L , OHLSEN GERALD G , STEVENS RALPH R JR
CPC classification number: G21K1/16
Search Results
1
records
(took 0.01 seconds)
筛选
AND
AND
过滤
NOT
NOT
Scan to Join
