Invention Grant
- Patent Title: Grading apparatus
- Patent Title (中): 分级仪
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Application No.: US23861651Application Date: 1951-07-26
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Publication No.: US2783882APublication Date: 1957-03-05
- Inventor: GRIFFIN ROGER L , MAINS JOHN H
- Applicant: SWIFT & CO
- Assignee: Swift & Co
- Current Assignee: Swift & Co
- Priority: US23861651 1951-07-26
- Main IPC: A43D1/08
- IPC: A43D1/08
Information query
