Invention Grant
- Patent Title: Thermal insulating material
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Application No.: US25639539Application Date: 1939-02-14
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Publication No.: US2261307APublication Date: 1941-11-04
- Inventor: GEORGE STILL WILLIAM
- Applicant: GEORGE STILL WILLIAM
- Assignee: Still William George
- Current Assignee: Still William George
- Priority: GB3244738 1938-11-08
- Main IPC: E04B1/80
- IPC: E04B1/80 ; F25D23/06
Information query
IPC分类: