Invention Grant
- Patent Title: Horn construction
- Patent Title (中): 喇叭施工
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Application No.: US4903360Application Date: 1960-08-11
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Publication No.: US3090349APublication Date: 1963-05-21
- Inventor: WEICHIEN CHOW , FISHER WILLIAM H
- Applicant: SPARTON CORP
- Assignee: Sparton Corp
- Current Assignee: Sparton Corp
- Priority: US4903360 1960-08-11
- Main IPC: G10K9/13
- IPC: G10K9/13
Information query
