Invention Grant
- Patent Title: Roofing sheet material
- Patent Title (中): 屋顶板材
-
Application No.: US57647222Application Date: 1922-07-21
-
Publication No.: US1489898APublication Date: 1924-04-08
- Inventor: SVEND PETERSEN
- Applicant: SVEND PETERSEN
- Assignee: Petersen Svend
- Current Assignee: Petersen Svend
- Priority: US57647222 1922-07-21
- Main IPC: E04D5/14
- IPC: E04D5/14
Information query
