Invention Grant
- Patent Title: Air and other filters and conditioners
- Patent Title (中): 空气和其他过滤器和护发素
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Application No.: US15122237Application Date: 1937-06-30
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Publication No.: US2225628APublication Date: 1940-12-24
- Inventor: HOLT FRASER GEORGE
- Applicant: HOLT FRASER GEORGE
- Assignee: Fraser George Holt
- Current Assignee: Fraser George Holt
- Priority: US15122237 1937-06-30; US65981333 1933-03-06
- Main IPC: B01D46/00
- IPC: B01D46/00 ; B01D46/04 ; B01D46/12 ; F24F3/16
Public/Granted literature
- US20160370044A1 Heat Pump With A Storage Tank Public/Granted day:2016-12-22
Information query
