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公开(公告)号:US1486987A
公开(公告)日:1924-03-18
申请号:US49787221
申请日:1921-09-02
Applicant: POLSTER JOHN P
Inventor: POLSTER JOHN P
IPC: F23H11/04
CPC classification number: F23H11/04
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公开(公告)号:US1670983A
公开(公告)日:1928-05-22
申请号:US5548125
申请日:1925-09-10
Applicant: POLSTER JOHN P
Inventor: POLSTER JOHN P
IPC: F23H11/00
CPC classification number: F23H11/00
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